Switch AccessibilityMode to be a bitmap

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 2074 matching lines @@
   const gfx::Point& location, const blink::WebPluginAction& action) {
   Send(new ViewMsg_PluginActionAt(GetRoutingID(), location, action));
 }
 
 void RenderViewHostImpl::NotifyMoveOrResizeStarted() {
   Send(new ViewMsg_MoveOrResizeStarted(GetRoutingID()));
 }
 
 void RenderViewHostImpl::OnAccessibilityEvents(
     const std::vector<AccessibilityHostMsg_EventParams>& params) {
-  if (view_ && !is_swapped_out_) {
+  if ((accessibility_mode() & AccessibilityModeFlagPlatform) &&
+      view_ &&
+      !is_swapped_out_) {
     view_->CreateBrowserAccessibilityManagerIfNeeded();
     BrowserAccessibilityManager* manager =
         view_->GetBrowserAccessibilityManager();
     if (manager)
       manager->OnAccessibilityEvents(params);
   }
 
   // Always send an ACK or the renderer can be in a bad state.
   Send(new AccessibilityMsg_Events_ACK(GetRoutingID()));
 
@@ skipping 158 matching lines @@
 void RenderViewHostImpl::AttachToFrameTree() {
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->ResetForMainFrameSwap();
   if (main_frame_id() != FrameTreeNode::kInvalidFrameId) {
     frame_tree->OnFirstNavigationAfterSwap(main_frame_id());
   }
 }
 
 }  // namespace content