Blink side of changes to enable cache clearing without a flag.

Source/web/LinkHighlight.cpp

 /*
  * Copyright (C) 2012 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:
  *
  * 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
@@ skipping 219 matching lines @@
     if (pathHasChanged) {
         m_path = newPath;
         m_contentLayer->layer()->setBounds(enclosingIntRect(boundingRect).size());
     }
 
     m_contentLayer->layer()->setPosition(boundingRect.location());
 
     return pathHasChanged;
 }
 
-void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect, WebContentLayerClient::GraphicsContextStatus contextStatus)
+void LinkHighlight::paintContents(WebCanvas* canvas, const WebRect& webClipRect, WebContentLayerClient::PaintingControlSetting paintingControl)
 {
     if (!m_node || !m_node->renderer())
         return;
 
     GraphicsContext::DisabledMode disabledMode = GraphicsContext::NothingDisabled;
-    if (contextStatus != WebContentLayerClient::GraphicsContextEnabled)
+    if (paintingControl == WebContentLayerClient::DisplayListConstructionDisabled)
         disabledMode = GraphicsContext::FullyDisabled;
 
     OwnPtr<GraphicsContext> graphicsContext;
     OwnPtr<DisplayItemList> displayItemList;
     if (RuntimeEnabledFeatures::slimmingPaintEnabled()) {
         displayItemList = DisplayItemList::create();
         graphicsContext = adoptPtr(new GraphicsContext(nullptr, displayItemList.get(), disabledMode));
     } else {
         graphicsContext = adoptPtr(new GraphicsContext(canvas, nullptr, disabledMode));
     }
@@ skipping 104 matching lines @@
     // Make sure we update geometry on the next callback from WebViewImpl::layout().
     m_geometryNeedsUpdate = true;
 }
 
 WebLayer* LinkHighlight::layer()
 {
     return clipLayer();
 }
 
 } // namespace blink