Revert of Revert of Migrate accessibility from RenderView to RenderFrame.

content/browser/frame_host/render_frame_host_delegate.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
+#include <vector>
+
 #include "base/basictypes.h"
 #include "base/i18n/rtl.h"
 #include "content/common/content_export.h"
+#include "content/common/frame_message_enums.h"
 #include "content/public/common/javascript_message_type.h"
 #include "content/public/common/media_stream_request.h"
 
+#if defined(OS_WIN)
+#include "ui/gfx/native_widget_types.h"
+#endif
+
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 class RenderFrameHost;
 class WebContents;
+struct AXEventNotificationDetails;
 struct ContextMenuParams;
 
 // An interface implemented by an object interested in knowing about the state
 // of the RenderFrameHost.
 class CONTENT_EXPORT RenderFrameHostDelegate {
  public:
   // This is used to give the delegate a chance to filter IPC messages.
   virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
                                  const IPC::Message& message);
 
@@ skipping 79 matching lines @@
   // not a WebContents, returns NULL.
   virtual WebContents* GetAsWebContents();
 
   // The render frame has requested access to media devices listed in
   // |request|, and the client should grant or deny that permission by
   // calling |callback|.
   virtual void RequestMediaAccessPermission(
       const MediaStreamRequest& request,
       const MediaResponseCallback& callback);
 
+  // Get the accessibility mode for the WebContents that owns this frame.
+  virtual AccessibilityMode GetAccessibilityMode() const;
+
+  // Invoked when an accessibility event is received from the renderer.
+  virtual void AccessibilityEventReceived(
+      const std::vector<AXEventNotificationDetails>& details) {}
+
+#if defined(OS_WIN)
+  // Returns the frame's parent's NativeViewAccessible.
+  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();
+#endif
+
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_