Fix race in BrowserAccessibilityManagerWin creation.

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 445 matching lines @@
     const SkBitmap& zoomed_bitmap) {
 }
 
 void RenderWidgetHostViewGuest::LockCompositingSurface() {
 }
 
 void RenderWidgetHostViewGuest::UnlockCompositingSurface() {
 }
 #endif  // defined(OS_ANDROID)
 
-#if defined(OS_WIN)
-void RenderWidgetHostViewGuest::SetParentNativeViewAccessible(
-    gfx::NativeViewAccessible accessible_parent) {
-}
-
-gfx::NativeViewId RenderWidgetHostViewGuest::GetParentForWindowlessPlugin()
-    const {
-  return NULL;
-}
-#endif
-
 void RenderWidgetHostViewGuest::DestroyGuestView() {
   host_->SetView(NULL);
   host_ = NULL;
   base::MessageLoop::current()->DeleteSoon(FROM_HERE, this);
 }
 
 bool RenderWidgetHostViewGuest::CanDispatchToConsumer(
     ui::GestureConsumer* consumer) {
   CHECK_EQ(static_cast<RenderWidgetHostViewGuest*>(consumer), this);
   return true;
@@ skipping 69 matching lines @@
   return SkBitmap::kARGB_8888_Config;
 }
 
 RenderWidgetHostViewBase*
 RenderWidgetHostViewGuest::GetGuestRenderWidgetHostView() const {
   return static_cast<RenderWidgetHostViewBase*>(
       guest_->GetEmbedderRenderWidgetHostView());
 }
 
 }  // namespace content