Hook up guest browser plugins to the accessibility tree.

content/browser/frame_host/render_frame_host_impl.h

Index: content/browser/frame_host/render_frame_host_impl.h
diff --git a/content/browser/frame_host/render_frame_host_impl.h b/content/browser/frame_host/render_frame_host_impl.h
index cc97543df27aff4f25551376472fc4478f42bd30..03763f6866713586bb382a6a9fc029f2af7a61aa 100644
--- a/content/browser/frame_host/render_frame_host_impl.h
+++ b/content/browser/frame_host/render_frame_host_impl.h
@@ -111,8 +111,8 @@ class CONTENT_EXPORT RenderFrameHostImpl
   virtual gfx::NativeViewAccessible AccessibilityGetNativeViewAccessible()
       OVERRIDE;
   virtual BrowserAccessibilityManager* AccessibilityGetChildFrame(
-      int64 frame_tree_node_id) OVERRIDE;
-  virtual BrowserAccessibilityManager* AccessibilityGetParentFrame() OVERRIDE;
+      int accessibility_node_id) OVERRIDE;
+  virtual BrowserAccessibility* AccessibilityGetParentFrame() OVERRIDE;
 
   bool CreateRenderFrame(int parent_routing_id);
   bool IsRenderFrameLive();
@@ -379,6 +379,18 @@ class CONTENT_EXPORT RenderFrameHostImpl
   void PlatformNotificationPermissionRequestDone(
       int request_id, blink::WebNotificationPermission permission);
 
+  // Update the the singleton FrameAccessibility instance with a map
+  // from accessibility node id to the frame routing id of a cross-process
+  // iframe.
+  void UpdateCrossProcessIframeAccessibility(
+      const std::map<int32, int> node_to_frame_routing_id_map);
+
+  // Update the the singleton FrameAccessibility instance with a map
+  // from accessibility node id to the browser plugin instance id of a
+  // guest WebContents.
+  void UpdateGuestFrameAccessibility(
+      const std::map<int32, int> node_to_browser_plugin_instance_id_map);
+
   // For now, RenderFrameHosts indirectly keep RenderViewHosts alive via a
   // refcount that calls Shutdown when it reaches zero.  This allows each
   // RenderFrameHostManager to just care about RenderFrameHosts, while ensuring