Remove GraphicsLayer::didScroll and directly call ScrollableArea::didScroll

third_party/WebKit/public/platform/WebLayer.h

 /*
  * Copyright (C) 2011 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 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef WebLayer_h
 #define WebLayer_h
 
 #include "WebBlendMode.h"
 #include "WebColor.h"
 #include "WebCommon.h"
-#include "WebDoublePoint.h"
+#include "WebFloatPoint.h"
 #include "WebFloatPoint3D.h"
 #include "WebFloatSize.h"
 #include "WebPoint.h"
 #include "WebRect.h"
 #include "WebSize.h"
 #include "WebString.h"
 #include "WebVector.h"
 
 class SkMatrix44;
 
@@ skipping 108 matching lines @@
   // delta and offset even though it will not be a descendant of the scroll
   // in the layer hierarchy.
   virtual void setScrollParent(WebLayer*) = 0;
 
   // A layer will not respect any clips established by layers between it and
   // its nearest clipping ancestor. Note, the clip parent must be an ancestor.
   // This is not a requirement of the scroll parent.
   virtual void setClipParent(WebLayer*) = 0;
 
   // Scrolling
-  virtual void setScrollPositionDouble(WebDoublePoint) = 0;
-  virtual WebDoublePoint scrollPositionDouble() const = 0;
+  virtual void setScrollPosition(WebFloatPoint) = 0;
+  virtual WebFloatPoint scrollPosition() const = 0;
 
   // To set a WebLayer as scrollable we must specify the corresponding clip
   // layer.
   virtual void setScrollClipLayer(WebLayer*) = 0;
   virtual bool scrollable() const = 0;
   virtual void setUserScrollable(bool horizontal, bool vertical) = 0;
   virtual bool userScrollableHorizontal() const = 0;
   virtual bool userScrollableVertical() const = 0;
 
   // Indicates that this layer will always scroll on the main thread for the
@@ skipping 45 matching lines @@
   virtual uint32_t compositorMutableProperties() const = 0;
 
   virtual void setHasWillChangeTransformHint(bool) = 0;
   virtual void setPreferredRasterBounds(const WebSize&) = 0;
   virtual void clearPreferredRasterBounds() = 0;
 };
 
 }  // namespace blink
 
 #endif  // WebLayer_h