Rework selection coloring.  Rename displaysWithFocusAttributes
        to isActive.  Move the white-blending code onto the Color API to make
        it more convenient to mutate colors for selection blending.  Eliminate all
        the selection state from the GraphicsContext and move it to the RenderTheme.
        Implement both Win32 and Mac theme selection colors.

        Reviewed by sfalken

        * bridge/mac/FrameMac.h:
        * bridge/mac/FrameMac.mm:
        (WebCore::FrameMac::setIsActive):
        * bridge/mac/WebCoreFrameBridge.h:
        * bridge/mac/WebCoreFrameBridge.mm:
        (-[WebCoreFrameBridge drawRect:]):
        (-[WebCoreFrameBridge setIsActive:]):
        (-[WebCoreFrameBridge selectionColor]):
        * css/cssstyleselector.cpp:
        (WebCore::CSSStyleSelector::checkOneSelector):
        * page/Frame.cpp:
        (WebCore::Frame::isActive):
        (WebCore::Frame::setIsActive):
        * page/Frame.h:
        * platform/Color.cpp:
        (WebCore::blend):
        (WebCore::Color::blendWithWhite):
        * platform/Color.h:
        (WebCore::Color::hasAlpha):
        * platform/GraphicsContext.cpp:
        (WebCore::GraphicsContextPrivate::GraphicsContextPrivate):
        * platform/GraphicsContext.h:
        * platform/mac/GraphicsContextMac.mm:
        * platform/win/TemporaryLinkStubs.cpp:
        (GraphicsContext::endTransparencyLayer):
        * rendering/InlineTextBox.cpp:
        (WebCore::InlineTextBox::paintSelection):
        * rendering/RenderBlock.cpp:
        (WebCore::RenderBlock::fillHorizontalSelectionGap):
        (WebCore::RenderBlock::fillVerticalSelectionGap):
        (WebCore::RenderBlock::fillLeftSelectionGap):
        (WebCore::RenderBlock::fillRightSelectionGap):
        * rendering/RenderHTMLCanvas.cpp:
        (WebCore::RenderHTMLCanvas::paint):
        * rendering/RenderImage.cpp:
        (WebCore::RenderImage::paint):
        * rendering/RenderListMarker.cpp:
        (WebCore::RenderListMarker::paint):
        * rendering/RenderListMarker.h:
        * rendering/RenderObject.cpp:
        (WebCore::RenderObject::selectionColor):
        * rendering/RenderObject.h:
        * rendering/RenderReplaced.cpp:
        * rendering/RenderReplaced.h:
        * rendering/RenderTheme.cpp:
        (WebCore::RenderTheme::activeSelectionColor):
        (WebCore::RenderTheme::inactiveSelectionColor):
        (WebCore::RenderTheme::platformActiveSelectionColor):
        (WebCore::RenderTheme::platformInactiveSelectionColor):
        * rendering/RenderTheme.h:
        * rendering/RenderThemeMac.h:
        * rendering/RenderThemeMac.mm:
        (WebCore::RenderThemeMac::platformActiveSelectionColor):
        (WebCore::RenderThemeMac::platformInactiveSelectionColor):
        * rendering/RenderThemeWin.cpp:
        (WebCore::RenderThemeWin::platformActiveSelectionColor):
        (WebCore::RenderThemeWin::platformInactiveSelectionColor):
        * rendering/RenderThemeWin.h:
        * rendering/RenderWidget.cpp:
        (WebCore::RenderWidget::paint):

WebKit:

        Rename displaysWithFocusAttributes to isActive.

        Reviewed by sfalken

        * WebKit.xcodeproj/project.pbxproj:
        * WebView/WebHTMLView.m:
        (-[WebHTMLView _updateFocusState]):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@14784 268f45cc-cd09-0410-ab3c-d52691b4dbfc