Remove setting for disabling cc touch hit testing.

Source/core/page/scrolling/ScrollingCoordinator.cpp

 /*
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 85 matching lines @@
 
 ScrollingCoordinator::~ScrollingCoordinator()
 {
 }
 
 bool ScrollingCoordinator::touchHitTestingEnabled() const
 {
     if (!m_page->mainFrame()->isLocalFrame())
         return false;
     RenderView* contentRenderer = m_page->deprecatedLocalMainFrame()->contentRenderer();
-    Settings* settings = m_page->mainFrame()->settings();
-    return RuntimeEnabledFeatures::touchEnabled() && settings->compositorTouchHitTesting() && contentRenderer && contentRenderer->usesCompositing();
+    return RuntimeEnabledFeatures::touchEnabled() && contentRenderer && contentRenderer->usesCompositing();

[jamesr, 2014/07/21 19:31:28]

i think we can delete this function completely and just check touchEnabled() at
the callsites.  The code that checks the return vale of this function only runs
when compositing is enabled (which is very nearly all the time these days)

[Zeeshan Qureshi, 2014/07/21 19:52:50]

Thanks, I'll double check with Rick and update.

 }
 
 void ScrollingCoordinator::setShouldHandleScrollGestureOnMainThreadRegion(const Region& region)
 {
     if (!m_page->mainFrame()->isLocalFrame())
         return;
     if (WebLayer* scrollLayer = toWebLayer(m_page->deprecatedLocalMainFrame()->view()->layerForScrolling())) {
         Vector<IntRect> rects = region.rects();
         WebVector<WebRect> webRects(rects.size());
         for (size_t i = 0; i < rects.size(); ++i)
@@ skipping 841 matching lines @@
     bool frameIsScrollable = frameView && frameView->isScrollable();
     if (frameIsScrollable != m_wasFrameScrollable)
         return true;
 
     if (WebLayer* scrollLayer = frameView ? toWebLayer(frameView->layerForScrolling()) : 0)
         return blink::WebSize(frameView->contentsSize()) != scrollLayer->bounds();
     return false;
 }
 
 } // namespace WebCore