Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 2ca5348fc14354fef1d29b472c3c9c204b4b07ec..583b8494462bb2c1bd6e56d042fea02ca0519ece 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -609,14 +609,6 @@ void RenderWidgetHostViewAndroid::FocusedNodeChanged(bool is_editable_node) {
   ime_adapter_android_.FocusedNodeChanged(is_editable_node);
 }
 
-void RenderWidgetHostViewAndroid::DidUpdateBackingStore(
-    const gfx::Rect& scroll_rect,
-    const gfx::Vector2d& scroll_delta,
-    const std::vector<gfx::Rect>& copy_rects,
-    const std::vector<ui::LatencyInfo>& latency_info) {
-  NOTIMPLEMENTED();
-}
-
 void RenderWidgetHostViewAndroid::RenderProcessGone(
     base::TerminationStatus status, int error_code) {
   Destroy();