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

content/renderer/accessibility/render_accessibility_impl.h

 // Copyright (c) 2012 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_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_
 #define CONTENT_RENDERER_ACCESSIBILITY_RENDER_ACCESSIBILITY_IMPL_H_
 
 #include <vector>
 
 #include "base/containers/hash_tables.h"
@@ skipping 107 matching lines @@
  private:
   // RenderFrameObserver implementation.
   void OnDestruct() override;
 
   // Handlers for messages from the browser to the renderer.
   void OnPerformAction(const ui::AXActionData& data);
   void OnEventsAck(int ack_token);
   void OnFatalError();
   void OnReset(int reset_token);
 
-  void OnHitTest(const gfx::Point& point);
+  void OnHitTest(const gfx::Point& point, ui::AXEvent event_to_fire);
   void OnSetAccessibilityFocus(const blink::WebAXObject& obj);
   void OnGetImageData(const blink::WebAXObject& obj, const gfx::Size& max_size);
   void AddPluginTreeToUpdate(AXContentTreeUpdate* update);
   void ScrollPlugin(int id_to_make_visible);
 
   // Events from Blink are collected until they are ready to be
   // sent to the browser.
   std::vector<AccessibilityHostMsg_EventParams> pending_events_;
 
   // The adapter that exposes Blink's accessibility tree to AXTreeSerializer.
@@ skipping 35 matching lines @@
 
   // So we can queue up tasks to be executed later.
   base::WeakPtrFactory<RenderAccessibilityImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderAccessibilityImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_ACCESSIBILITY_RENDERER_ACCESSIBILITY_H_