Add a context field to the accessibility extension API.

chrome/browser/accessibility/accessibility_events.cc

 // Copyright (c) 2011 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 "chrome/browser/accessibility/accessibility_events.h"
 
 #include "base/values.h"
 
 #include "chrome/browser/accessibility/accessibility_extension_api_constants.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 25 matching lines @@
     Profile* profile, const std::string& control_name)
     : AccessibilityEventInfo(profile), name_(control_name) {
 }
 
 AccessibilityControlInfo::~AccessibilityControlInfo() {
 }
 
 void AccessibilityControlInfo::SerializeToDict(DictionaryValue *dict) const {
   dict->SetString(keys::kNameKey, name_);
   dict->SetString(keys::kTypeKey, type());
+  if (!context_.empty())
+    dict->SetString(keys::kContextKey, context_);
 }
 
 AccessibilityWindowInfo::AccessibilityWindowInfo(Profile* profile,
                                                  const std::string& window_name)
     : AccessibilityControlInfo(profile, window_name) {
 }
 
 const char* AccessibilityWindowInfo::type() const {
   return keys::kTypeWindow;
 }
@@ skipping 193 matching lines @@
 const char* AccessibilityMenuItemInfo::type() const {
   return keys::kTypeMenuItem;
 }
 
 void AccessibilityMenuItemInfo::SerializeToDict(DictionaryValue *dict) const {
   AccessibilityControlInfo::SerializeToDict(dict);
   dict->SetBoolean(keys::kHasSubmenuKey, has_submenu_);
   dict->SetInteger(keys::kItemIndexKey, item_index_);
   dict->SetInteger(keys::kItemCountKey, item_count_);
 }