Fix WebView accessibility

content/browser/frame_host/render_frame_host_impl.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_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 452 matching lines @@
   // renderer process, and the accessibility tree it sent can be
   // retrieved using GetAXTreeForTesting().
   void SetAccessibilityCallbackForTesting(
       const base::Callback<void(ui::AXEvent, int)>& callback);
 
   // Called when the metadata about the accessibility tree for this frame
   // changes due to a browser-side change, as opposed to due to an IPC from
   // a renderer.
   void UpdateAXTreeData();
 
+  // Set the AX tree ID of the embedder RFHI, if this is a browser plugin guest.
+  void SetBrowserPluginEmbedderAXTreeID(AXTreeIDRegistry::AXTreeID ax_tree_id);
+
   // Send a message to the render process to change text track style settings.
   void SetTextTrackSettings(const FrameMsg_TextTrackSettings_Params& params);
 
   // Returns a snapshot of the accessibility tree received from the
   // renderer as of the last time an accessibility notification was
   // received.
   const ui::AXTree* GetAXTreeForTesting();
 
   // Access the BrowserAccessibilityManager if it already exists.
   BrowserAccessibilityManager* browser_accessibility_manager() const {
@@ skipping 402 matching lines @@
   // assigned) and a complete replacement accessibility tree.
   int accessibility_reset_token_;
 
   // A count of the number of times we needed to reset accessibility, so
   // we don't keep trying to reset forever.
   int accessibility_reset_count_;
 
   // The last AXContentTreeData for this frame received from the RenderFrame.
   AXContentTreeData ax_content_tree_data_;
 
+  // The AX tree ID of the embedder, if this is a browser plugin guest.
+  AXTreeIDRegistry::AXTreeID browser_plugin_embedder_ax_tree_id_;
+
   // The mapping from callback id to corresponding callback for pending
   // accessibility tree snapshot calls created by RequestAXTreeSnapshot.
   std::map<int, AXTreeSnapshotCallback> ax_tree_snapshot_callbacks_;
 
   // Callback when an event is received, for testing.
   base::Callback<void(ui::AXEvent, int)> accessibility_testing_callback_;
   // The most recently received accessibility tree - for testing only.
   scoped_ptr<ui::AXTree> ax_tree_for_testing_;
   // Flag to not create a BrowserAccessibilityManager, for testing. If one
   // already exists it will still be used.
@@ skipping 37 matching lines @@
 
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_