Remove RenderWidgetHostView*::DidUpdateBackingStore.

content/browser/renderer_host/render_widget_host_view_mac.mm

 // 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/browser/renderer_host/render_widget_host_view_mac.h"
 
 #import <objc/runtime.h>
 #include <QuartzCore/QuartzCore.h>
 
 #include "base/basictypes.h"
@@ skipping 992 matching lines @@
 void RenderWidgetHostViewMac::ImeCompositionRangeChanged(
     const gfx::Range& range,
     const std::vector<gfx::Rect>& character_bounds) {
   // The RangeChanged message is only sent with valid values. The current
   // caret position (start == end) will be sent if there is no IME range.
   [cocoa_view_ setMarkedRange:range.ToNSRange()];
   composition_range_ = range;
   composition_bounds_ = character_bounds;
 }
 
-void RenderWidgetHostViewMac::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) {
-  // This can be called while already inside of a display function. Process the
-  // new frame in a callback to ensure a clean stack.
-  // TODO(ccameron): This should never be called. Remove the remaining callers
-  // and remove all places where the backing store is drawn.
-  AddPendingLatencyInfo(latency_info);
-  base::MessageLoop::current()->PostTask(
-      FROM_HERE,
-      base::Bind(&RenderWidgetHostViewMac::GotSoftwareFrame,

[piman, 2014/04/28 20:47:52]

Can you remove GotSoftwareFrame too, now?

-                 weak_factory_.GetWeakPtr()));
-}
-
 void RenderWidgetHostViewMac::RenderProcessGone(base::TerminationStatus status,
                                                 int error_code) {
   Destroy();
 }
 
 void RenderWidgetHostViewMac::Destroy() {
   [[NSNotificationCenter defaultCenter]
       removeObserver:cocoa_view_
                 name:NSWindowWillCloseNotification
               object:popup_window_];
@@ skipping 3272 matching lines @@
 }
 
 - (void)disableRendering {
   // Disable the fade-out animation as the layer is removed.
   ScopedCAActionDisabler disabler;
   [self removeFromSuperlayer];
   renderWidgetHostView_ = nil;
 }
 
 @end  // implementation SoftwareLayer