Revert of Cross-process iframe accessibility.

content/browser/frame_host/render_widget_host_view_child_frame.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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
-#include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/frame_host/cross_process_frame_connector.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/render_process_host.h"
 
 namespace content {
 
 RenderWidgetHostViewChildFrame::RenderWidgetHostViewChildFrame(
     RenderWidgetHost* widget_host)
@@ skipping 317 matching lines @@
 }
 #endif // defined(OS_WIN)
 
 SkColorType RenderWidgetHostViewChildFrame::PreferredReadbackFormat() {
   return kN32_SkColorType;
 }
 
 BrowserAccessibilityManager*
 RenderWidgetHostViewChildFrame::CreateBrowserAccessibilityManager(
     BrowserAccessibilityDelegate* delegate) {
-  return BrowserAccessibilityManager::Create(
-      BrowserAccessibilityManager::GetEmptyDocument(), delegate);
+  // This eventually needs to be implemented for cross-process iframes.
+  // http://crbug.com/368298
+  return NULL;
 }
 
 }  // namespace content