Generalize the HIT_TEST accessibility action so that it can send any event.

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 742 matching lines @@
   void OnDispatchLoad();
   void OnAccessibilityEvents(
       const std::vector<AccessibilityHostMsg_EventParams>& params,
       int reset_token,
       int ack_token);
   void OnAccessibilityLocationChanges(
       const std::vector<AccessibilityHostMsg_LocationChangeParams>& params);
   void OnAccessibilityFindInPageResult(
       const AccessibilityHostMsg_FindInPageResultParams& params);
   void OnAccessibilityChildFrameHitTestResult(const gfx::Point& point,
-                                              int hit_obj_id);
+                                              int hit_obj_id,
+                                              ui::AXEvent event_to_fire);
   void OnAccessibilitySnapshotResponse(
       int callback_id,
       const AXContentTreeUpdate& snapshot);
   void OnSmartClipDataExtracted(uint32_t id,
                                 base::string16 text,
                                 base::string16 html);
   void OnToggleFullscreen(bool enter_fullscreen);
   void OnDidStartLoading(bool to_different_document);
   void OnDidStopLoading();
   void OnDidChangeLoadProgress(double load_progress);
@@ skipping 397 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_