Delete blink code for scroll-blocks-on

Source/platform/graphics/GraphicsLayer.cpp

 /*
  * Copyright (C) 2009 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 101 matching lines @@
 #if ENABLE(ASSERT)
     if (m_client)
         m_client->verifyNotPainting();
 #endif
 
     m_contentLayerDelegate = adoptPtr(new ContentLayerDelegate(this));
     m_layer = adoptPtr(Platform::current()->compositorSupport()->createContentLayer(m_contentLayerDelegate.get()));
     m_layer->layer()->setDrawsContent(m_drawsContent && m_contentsVisible);
     m_layer->layer()->setWebLayerClient(this);
     m_layer->setAutomaticallyComputeRasterScale(true);
+
+    // TODO(rbyers): Expose control over this to the web - crbug.com/489802:
+    setScrollBlocksOn(WebScrollBlocksOnStartTouch | WebScrollBlocksOnWheelEvent);
 }
 
 GraphicsLayer::~GraphicsLayer()
 {
     for (size_t i = 0; i < m_linkHighlights.size(); ++i)
         m_linkHighlights[i]->clearCurrentGraphicsLayer();
     m_linkHighlights.clear();
 
 #if ENABLE(ASSERT)
     if (m_client)
@@ skipping 458 matching lines @@
 
     if (m_size != IntSize())
         json->setArray("bounds", sizeAsJSONArray(m_size));
 
     if (m_opacity != 1)
         json->setNumber("opacity", m_opacity);
 
     if (m_blendMode != WebBlendModeNormal)
         json->setString("blendMode", compositeOperatorName(CompositeSourceOver, m_blendMode));
 
-    if ((flags & LayerTreeIncludesScrollBlocksOn) && m_scrollBlocksOn) {
-        RefPtr<JSONArray> scrollBlocksOnJSON = adoptRef(new JSONArray);
-        if (m_scrollBlocksOn & WebScrollBlocksOnStartTouch)
-            scrollBlocksOnJSON->pushString("StartTouch");
-        if (m_scrollBlocksOn & WebScrollBlocksOnWheelEvent)
-            scrollBlocksOnJSON->pushString("WheelEvent");
-        if (m_scrollBlocksOn & WebScrollBlocksOnScrollEvent)
-            scrollBlocksOnJSON->pushString("ScrollEvent");
-        json->setArray("scrollBlocksOn", scrollBlocksOnJSON);
-    }
-
     if (m_isRootForIsolatedGroup)
         json->setBoolean("isolate", m_isRootForIsolatedGroup);
 
     if (m_contentsOpaque)
         json->setBoolean("contentsOpaque", m_contentsOpaque);
 
     if (!m_shouldFlattenTransform)
         json->setBoolean("shouldFlattenTransform", m_shouldFlattenTransform);
 
     if (m_3dRenderingContext) {
@@ skipping 532 matching lines @@
 {
     if (!layer) {
         fprintf(stderr, "Cannot showGraphicsLayerTree for (nil).\n");
         return;
     }
 
     String output = layer->layerTreeAsText(blink::LayerTreeIncludesDebugInfo);
     fprintf(stderr, "%s\n", output.utf8().data());
 }
 #endif