[Cleanup] Follow Up of Pinch/Zoom Infrastucture & Plumbing CL

Source/web/PinchViewports.cpp

 /*
  * Copyright (C) 2013 Google 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 55 matching lines @@
     ASSERT(m_owner);
     WebCore::ScrollingCoordinator* coordinator = m_owner->page()->scrollingCoordinator();
     ASSERT(coordinator);
     coordinator->setLayerIsContainerForFixedPositionLayers(m_innerViewportScrollLayer.get(), true);
 
     // No need for the inner viewport to clip, since the compositing
     // surface takes care of it -- and clipping here would interfere with
     // dynamically-sized viewports on Android.
     m_innerViewportContainerLayer->setMasksToBounds(false);
 
-    // TODO(wjmaclean) Remove next line once https://codereview.chromium.org/23983047 lands.
-    m_innerViewportScrollLayer->platformLayer()->setScrollable(true);
     m_innerViewportScrollLayer->platformLayer()->setScrollClipLayer(
         m_innerViewportContainerLayer->platformLayer());
     m_innerViewportScrollLayer->platformLayer()->setUserScrollable(true, true);
 
     m_innerViewportContainerLayer->addChild(m_pageScaleLayer.get());
     m_pageScaleLayer->addChild(m_innerViewportScrollLayer.get());
     m_innerViewportContainerLayer->addChild(m_overlayScrollbarHorizontal.get());
     m_innerViewportContainerLayer->addChild(m_overlayScrollbarVertical.get());
 
     // Setup the inner viewport overlay scrollbars.
@@ skipping 136 matching lines @@
     } else if (graphicsLayer == m_overlayScrollbarVertical.get()) {
         name =  "Overlay Scrollbar Vertical Layer";
     } else {
         ASSERT_NOT_REACHED();
     }
 
     return name;
 }
 
 } // namespace blink