Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/renderer/render_widget.cc

 // Copyright (c) 2012 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 "content/renderer/render_widget.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/debug/trace_event_synthetic_delay.h"
@@ skipping 1460 matching lines @@
       !need_update_rect_for_auto_resize_ &&
       !plugin_window_moves_.size()) {
     return;
   }
 
   ViewHostMsg_UpdateRect_Params params;
   params.view_size = size_;
   params.plugin_window_moves.swap(plugin_window_moves_);
   params.flags = next_paint_flags_;
   params.scroll_offset = GetScrollOffset();
-  params.scale_factor = device_scale_factor_;
 
   Send(new ViewHostMsg_UpdateRect(routing_id_, params));
   next_paint_flags_ = 0;
   need_update_rect_for_auto_resize_ = false;
 }
 
 void RenderWidget::scheduleComposite() {
   RenderThreadImpl* render_thread = RenderThreadImpl::current();
   // render_thread may be NULL in tests.
   if (render_thread && render_thread->compositor_message_loop_proxy().get() &&
@@ skipping 836 matching lines @@
 
 void RenderWidget::RegisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.AddObserver(frame);
 }
 
 void RenderWidget::UnregisterSwappedOutChildFrame(RenderFrameImpl* frame) {
   swapped_out_frames_.RemoveObserver(frame);
 }
 
 }  // namespace content