Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/frame_host/render_frame_host_delegate.cc

Index: content/browser/frame_host/render_frame_host_delegate.cc
diff --git a/content/browser/frame_host/render_frame_host_delegate.cc b/content/browser/frame_host/render_frame_host_delegate.cc
index f5d07e35d4307815332b5d549e777fa5edd685c1..d33318546a8ce329357f4cd164ba6792dae54ab6 100644
--- a/content/browser/frame_host/render_frame_host_delegate.cc
+++ b/content/browser/frame_host/render_frame_host_delegate.cc
@@ -7,7 +7,6 @@
 #include "base/callback.h"
 #include "base/strings/string16.h"
 #include "content/browser/frame_host/render_frame_host_delegate.h"
-#include "ui/gfx/native_widget_types.h"
 #include "url/gurl.h"
 
 namespace content {
@@ -44,15 +43,4 @@
                scoped_ptr<MediaStreamUI>());
 }
 
-AccessibilityMode RenderFrameHostDelegate::GetAccessibilityMode() const {
-  return AccessibilityModeOff;
-}
-
-#if defined(OS_WIN)
-gfx::NativeViewAccessible
-    RenderFrameHostDelegate::GetParentNativeViewAccessible() {
-  return NULL;
-}
-#endif  // defined(OS_WIN)
-
 }  // namespace content