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 "content/common/content_export.h"
+#include "content/common/frame_message_enums.h"
 #include "content/public/common/javascript_message_type.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 57 matching lines @@
   virtual void DidDisownOpener(RenderFrameHost* render_frame_host) {}
 
   // The onload handler in the frame has completed. Only called for the top-
   // level frame.
   virtual void DocumentOnLoadCompleted(RenderFrameHost* render_frame_host) {}
 
   // Return this object cast to a WebContents, if it is one. If the object is
   // not a WebContents, returns NULL.
   virtual WebContents* GetAsWebContents();
 
+  // Get the accessibility mode for all frames in this WebContents.

[nasko, 2014/05/12 17:28:01]

nit: This wording reads as though it will return the setting for each frame. The
accessibility setting is for the WebContents or more generally the Delegate and
as an implementation detail it happens to apply to all frames.

[dmazzoni, 2014/05/13 06:36:52]

Good point. I clarified the wording.

+  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_