Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/test/test_render_view_host.h

Index: content/test/test_render_view_host.h
diff --git a/content/test/test_render_view_host.h b/content/test/test_render_view_host.h
index 6a40983fd091840bc23797df16a63e1d4ff4a3b1..540407d8666f8ca239bd2af8f295025f6d1f77ef 100644
--- a/content/test/test_render_view_host.h
+++ b/content/test/test_render_view_host.h
@@ -106,11 +106,6 @@ class TestRenderWidgetHostView : public RenderWidgetHostViewBase {
       const gfx::Range& range,
       const std::vector<gfx::Rect>& character_bounds) OVERRIDE {}
 #endif
-  virtual void DidUpdateBackingStore(
-      const gfx::Rect& scroll_rect,
-      const gfx::Vector2d& scroll_delta,
-      const std::vector<gfx::Rect>& rects,
-      const std::vector<ui::LatencyInfo>& latency_info) OVERRIDE {}
   virtual void RenderProcessGone(base::TerminationStatus status,
                                  int error_code) OVERRIDE;
   virtual void WillDestroyRenderWidget(RenderWidgetHost* rwh) { }