Chrome app manifest support for action handlers.

extensions/common/manifest_constants.cc

 // 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.
 
 #include "build/build_config.h"
 #include "extensions/common/manifest_constants.h"
 
 namespace extensions {
 
 namespace manifest_keys {
 
 const char kAboutPage[] = "about_page";
+const char kActionHandlers[] = "action_handlers";
 const char kAllFrames[] = "all_frames";
 const char kAltKey[] = "altKey";
 const char kApp[] = "app";
 const char kAppIconColor[] = "app.icon_color";
 const char kAutomation[] = "automation";
 const char kBackgroundAllowJsAccess[] = "background.allow_js_access";
 const char kBackgroundPage[] = "background.page";
 const char kBackgroundPageLegacy[] = "background_page";
 const char kBackgroundPersistent[] = "background.persistent";
 const char kBackgroundScripts[] = "background.scripts";
@@ skipping 717 matching lines @@
     "'file_system_provider_capabilities' section to be specified in the "
     "manifest.";
 const char kInvalidFileSystemProviderMissingPermission[] =
     "The 'file_system_provider_capabilities' section requires the "
     "'fileSystemProvider' permission to be specified in the manifest.";
 #endif
 
 }  // namespace manifest_errors
 
 }  // namespace extensions