https://bugs.webkit.org/show_bug.cgi?id=84487

Reviewed by James Robinson.

Adds support for creating composited touch link highlights in renderer thread. Clipping not yet
implemented for non-composited frames/overflow divs, but scrolling and layout changes are supported.
Transform support currently limited to translation.

Source/WebCore:

Unit tests for LinkHighlight revised.

Tests: platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-clipped.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-composite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-noncomposite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-scrolled-clipped.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-scrolled.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scroll-clip.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scrolled.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-2.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scroll-clip.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-composite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-noncomposite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-clipped.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-late-composite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-clipped.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-late-composite.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-inner.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-outer.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-rotated.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-scaledX.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-scaledY.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-window-scroll.html
       platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple.html

* WebCore.gypi:
* platform/graphics/chromium/GraphicsLayerChromium.cpp:
(WebCore::GraphicsLayerChromium::GraphicsLayerChromium):
(WebCore::GraphicsLayerChromium::willBeDestroyed): Adds notification to LinkHighlight when layer goes away.
(WebCore::GraphicsLayerChromium::updateNames): Now sets debug name for LinkHighlight layer.
(WebCore::GraphicsLayerChromium::setSize): Invalidates LinkHighlight if present.
(WebCore::GraphicsLayerChromium::setNeedsDisplay): Invalidates LinkHighlight if present.
(WebCore::GraphicsLayerChromium::setNeedsDisplayInRect): Invalidates LinkHighlight if present.
(WebCore::GraphicsLayerChromium::setLinkHighlight): Registers LinkHighlightClient* with GraphicsLayerChromium.
(WebCore::GraphicsLayerChromium::updateChildList): Now adds LinkHighlight WebLayer if highlight active.
(WebCore::GraphicsLayerChromium::updateLayerIsDrawable): Invalidates LinkHighlight if present.
* platform/graphics/chromium/GraphicsLayerChromium.h:
(WebCore):
(LinkHighlightClient): Abstract interface seen by GraphicsLayerChromium.
(WebCore::LinkHighlightClient::~LinkHighlightClient):
(GraphicsLayerChromium):
(WebCore::GraphicsLayerChromium::linkHighlight):
* platform/graphics/chromium/LinkHighlight.cpp: Removed.

Source/WebKit/chromium:

Unit tests for LinkHighlight revised.

* WebKit.gyp:
* src/LinkHighlight.cpp: Added.
(WebKit):
(WebKit::LinkHighlight::create):
(WebKit::LinkHighlight::LinkHighlight):
(WebKit::LinkHighlight::~LinkHighlight):
(WebKit::LinkHighlight::contentLayer): Accessor for layer containing highlight.
(WebKit::LinkHighlight::clipLayer): Accessor for layer that provides clipping for highlight.
(WebKit::LinkHighlight::releaseResources): Releases Node* for highlight target, clears client/delegate pointers.
(WebKit::LinkHighlight::computeEnclosingCompositingLayer): Determines which GraphicsLayerChromium to attach highlight to.
(WebKit::LinkHighlight::computeHighlightLayerPathAndPosition): Determines coordinates of highlight in owning GraphicsLayerChromium's coordinates.
(WebKit::LinkHighlight::paintContents): If highlight active, paints highlight.
(WebKit::LinkHighlight::startHighlightAnimation): Called to start highlight animation.
(WebKit::LinkHighlight::clearGraphicsLayerLinkHighlightPointer): Removes this LinkHighlight's pointer from owning GraphicsLayerChromium.
(WebKit::LinkHighlight::notifyAnimationStarted): Implements WebAnimationDelegate.
(WebKit::LinkHighlight::notifyAnimationFinished): Implements WebAnimationDelegate, releases resources when animation completes.
(WebKit::LinkHighlight::updateGeometry): Invokes computation of which GraphicsLayerChromium to attach to, and highlight shape & position.
    Computations proceed only if preceded by call to invalidate().
(WebKit::LinkHighlight::clearCurrentGraphicsLayer): Handles notification that current GraphicsLayerChromium* is no longer valid.
(WebKit::LinkHighlight::invalidate): Sets flag to allow geometry update on next call from WebViewImpl::layout().
(WebKit::LinkHighlight::layer): Exports WebLayer* for use in GraphicsLayerChromium.
* src/LinkHighlight.h: Renamed from Source/WebCore/platform/graphics/chromium/LinkHighlight.h.
(WebCore):
(WebKit):
(LinkHighlight):
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::handleGestureEvent):
(WebKit):
(WebKit::highlightConditions):
(WebKit::WebViewImpl::bestTouchLinkNode): Find highlight target node for touch event location.
(WebKit::WebViewImpl::enableTouchHighlight): Invokes highlight for node at current touch event location.
(WebKit::WebViewImpl::layout): Adds call to LinkHighlight::updateGeometry().
* src/WebViewImpl.h:
(WebKit):
(WebViewImpl):
(WebKit::WebViewImpl::linkHighlight):
* tests/LinkHighlightTest.cpp:
(WebCore):
(WebCore::TEST):
* tests/data/test_touch_link_highlight.html: Added.

LayoutTests:

* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-clipped.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-composite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-noncomposite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-scrolled.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scroll-clip.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scrolled.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-2.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-composite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-noncomposite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-late-composite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-late-composite.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-inner.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-outer.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-window-scroll.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple.html: Added.
* platform/chromium-linux/compositing/gestures/resources/1-frame-composited.html: Added.
* platform/chromium-linux/compositing/gestures/resources/1-frame-noncomposited.html: Added.
* platform/chromium-linux/compositing/gestures/resources/1-nested-frame-composited.html: Added.
* platform/chromium-linux/compositing/gestures/resources/1-nested-frame-noncomposited.html: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-clipped-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-clipped-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-composite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-composite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-noncomposite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-composited-scrolled-late-noncomposite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-scrolled-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-iframe-scrolled-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scroll-clip-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scroll-clip-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scrolled-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-composited-scrolled-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-2-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-2-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-layout-change-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-composite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-composite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-noncomposite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-1-overflow-div-scrolled-late-noncomposite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-composited-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-late-composite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-inner-late-composite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-late-composite-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-iframe-scrolled-outer-late-composite-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-inner-scroll-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-composited-outer-scroll-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-inner-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-inner-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-outer-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-2-overflow-div-scrolled-outer-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-window-scroll-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-window-scroll-expected.txt: Added.
* platform/chromium/TestExpectations:


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@126345 268f45cc-cd09-0410-ab3c-d52691b4dbfc