[chromium] Modify gesture highlight behaviour. Cancel on GestureLongPress and animate on GestureTapCancel.
https://bugs.webkit.org/show_bug.cgi?id=97355

Reviewed by Adrienne Walker.

This patch revises the behaviour of GestureTapDown highlighting so that the highlight should disappear if
interrupted by GestureTap, and animate away if interrupted by GestureTapCancel.

Source/WebKit/chromium:

* src/LinkHighlight.cpp:
(WebKit::LinkHighlight::LinkHighlight):
(WebKit::LinkHighlight::startHighlightAnimationIfNeeded):
* src/LinkHighlight.h:
(LinkHighlight):
* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::handleGestureEvent):
(WebKit::WebViewImpl::enableTouchHighlight):

LayoutTests:

* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-cancel.html: removed extra testRunner.display().
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-cancel2.html: Added.
* platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-longPress.html: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-cancel2-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-cancel2-expected.txt: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-longPress-expected.png: Added.
* platform/chromium-linux/platform/chromium-linux/compositing/gestures/gesture-tapHighlight-simple-longPress-expected.txt: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@130539 268f45cc-cd09-0410-ab3c-d52691b4dbfc