Revert of Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/renderer_host/render_widget_host_delegate.cc

Index: content/browser/renderer_host/render_widget_host_delegate.cc
diff --git a/content/browser/renderer_host/render_widget_host_delegate.cc b/content/browser/renderer_host/render_widget_host_delegate.cc
index 23687d0f24d5a841f53b2e02cbd2b42fd6d90e0f..a3a474ffab18d7bd1067635a303068d71a91addd 100644
--- a/content/browser/renderer_host/render_widget_host_delegate.cc
+++ b/content/browser/renderer_host/render_widget_host_delegate.cc
@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include "base/basictypes.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 
 namespace content {
@@ -27,9 +28,19 @@
   return false;
 }
 
+BrowserAccessibilityManager*
+    RenderWidgetHostDelegate::GetRootBrowserAccessibilityManager() {
+  return NULL;
+}
+
+BrowserAccessibilityManager*
+    RenderWidgetHostDelegate::GetOrCreateRootBrowserAccessibilityManager() {
+  return NULL;
+}
+
 #if defined(OS_WIN)
 gfx::NativeViewAccessible
-RenderWidgetHostDelegate::GetParentNativeViewAccessible() {
+    RenderWidgetHostDelegate::GetParentNativeViewAccessible() {
   return NULL;
 }
 #endif