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

third_party/WebKit/Source/platform/graphics/GraphicsLayer.h

 /*
  * Copyright (C) 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. 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 30 matching lines @@
 #include "platform/graphics/GraphicsLayerClient.h"
 #include "platform/graphics/GraphicsLayerDebugInfo.h"
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/PaintInvalidationReason.h"
 #include "platform/graphics/paint/DisplayItemClient.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/heap/Handle.h"
 #include "platform/transforms/TransformationMatrix.h"
 #include "public/platform/WebContentLayer.h"
 #include "public/platform/WebImageLayer.h"
-#include "public/platform/WebLayerScrollClient.h"
 #include "public/platform/WebLayerStickyPositionConstraint.h"
 #include "third_party/skia/include/core/SkFilterQuality.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
 #include "wtf/Vector.h"
 #include <memory>
 
 namespace blink {
 
 class CompositorFilterOperations;
 class Image;
 class JSONObject;
 class LinkHighlight;
 class PaintController;
 struct RasterInvalidationTracking;
 class ScrollableArea;
 class WebLayer;
 
 typedef Vector<GraphicsLayer*, 64> GraphicsLayerVector;
 
 // GraphicsLayer is an abstraction for a rendering surface with backing store,
 // which may have associated transformation and animations.
-
-class PLATFORM_EXPORT GraphicsLayer : public WebLayerScrollClient,
-                                      public cc::LayerClient,
+class PLATFORM_EXPORT GraphicsLayer : public cc::LayerClient,
                                       public DisplayItemClient {
   WTF_MAKE_NONCOPYABLE(GraphicsLayer);
   USING_FAST_MALLOC(GraphicsLayer);
 
  public:
   static std::unique_ptr<GraphicsLayer> create(GraphicsLayerClient*);
 
   ~GraphicsLayer() override;
 
   GraphicsLayerClient* client() const { return m_client; }
@@ skipping 161 matching lines @@
 
   WebContentLayer* contentLayer() const { return m_layer.get(); }
 
   static void registerContentsLayer(WebLayer*);
   static void unregisterContentsLayer(WebLayer*);
 
   IntRect interestRect();
   void paint(const IntRect* interestRect,
              GraphicsContext::DisabledMode = GraphicsContext::NothingDisabled);
 
-  // WebLayerScrollClient implementation.
-  void didScroll() override;
-
   // cc::LayerClient implementation.
   std::unique_ptr<base::trace_event::ConvertableToTraceFormat> TakeDebugInfo(
       cc::Layer*) override;
   void didUpdateMainThreadScrollingReasons() override;
   void didChangeScrollbarsHidden(bool);
 
   PaintController& getPaintController();
 
   // Exposed for tests.
   WebLayer* contentsLayer() const { return m_contentsLayer; }
@@ skipping 141 matching lines @@
 };
 
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the blink namespace for ease of invocation from gdb.
 void PLATFORM_EXPORT showGraphicsLayerTree(const blink::GraphicsLayer*);
 #endif
 
 #endif  // GraphicsLayer_h