Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/browser/frame_host/render_widget_host_view_guest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/frame_host/render_widget_host_view_guest.h"
@@ skipping 324 matching lines @@
   std::vector<gfx::Rect> guest_character_bounds;
   for (size_t i = 0; i < character_bounds.size(); ++i) {
     gfx::Rect guest_rect = guest_->ToGuestRect(character_bounds[i]);
     guest_character_bounds.push_back(guest_rect);
   }
   // Forward the information to embedding RWHV.
   rwhv->ImeCompositionRangeChanged(range, guest_character_bounds);
 }
 #endif
 
-void RenderWidgetHostViewGuest::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) {
-  NOTREACHED();
-}
-
 void RenderWidgetHostViewGuest::SelectionChanged(const base::string16& text,
                                                  size_t offset,
                                                  const gfx::Range& range) {
   platform_view_->SelectionChanged(text, offset, range);
 }
 
 void RenderWidgetHostViewGuest::SelectionBoundsChanged(
     const ViewHostMsg_SelectionBounds_Params& params) {
   if (!guest_)
     return;
@@ skipping 222 matching lines @@
       ++g_it) {
     ForwardGestureEventToRenderer(*g_it);
   }
 }
 
 SkBitmap::Config RenderWidgetHostViewGuest::PreferredReadbackFormat() {
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content