Implement Android accessible hit testing using an IPC to the renderer process.

content/browser/renderer_host/render_view_host_impl.cc

 // 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.
 
 #include "content/browser/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1460 matching lines @@
 }
 
 void RenderViewHostImpl::DisownOpener() {
   // This should only be called when swapped out.
   DCHECK(IsSwappedOut());
 
   Send(new ViewMsg_DisownOpener(GetRoutingID()));
 }
 
 void RenderViewHostImpl::SetAccessibilityCallbackForTesting(
-    const base::Callback<void(ui::AXEvent)>& callback) {
+    const base::Callback<void(ui::AXEvent, int)>& callback) {
   accessibility_testing_callback_ = callback;
 }
 
 void RenderViewHostImpl::UpdateWebkitPreferences(const WebPreferences& prefs) {
   Send(new ViewMsg_UpdateWebPreferences(GetRoutingID(), prefs));
 }
 
 void RenderViewHostImpl::GetAudioOutputControllers(
     const GetAudioOutputControllersCallback& callback) const {
   AudioRendererHost* audio_host =
@@ skipping 90 matching lines @@
     return;
 
   for (unsigned i = 0; i < params.size(); i++) {
     const AccessibilityHostMsg_EventParams& param = params[i];
     if (static_cast<int>(param.event_type) < 0)
       continue;
     if (!ax_tree_)
       ax_tree_.reset(new ui::AXTree(param.update));
     else
       CHECK(ax_tree_->Unserialize(param.update)) << ax_tree_->error();
-    accessibility_testing_callback_.Run(param.event_type);
+    accessibility_testing_callback_.Run(param.event_type, param.id);
   }
 }
 
 void RenderViewHostImpl::OnAccessibilityLocationChanges(
     const std::vector<AccessibilityHostMsg_LocationChangeParams>& params) {
   if (view_ && IsRVHStateActive(rvh_state_)) {
     if (accessibility_mode() & AccessibilityModeFlagPlatform) {
       view_->CreateBrowserAccessibilityManagerIfNeeded();
       BrowserAccessibilityManager* manager =
           view_->GetBrowserAccessibilityManager();
@@ skipping 90 matching lines @@
   return true;
 }
 
 void RenderViewHostImpl::AttachToFrameTree() {
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->ResetForMainFrameSwap();
 }
 
 }  // namespace content