Chrome app manifest support for action handlers.

chrome/browser/chromeos/note_taking_helper.h

 // Copyright 2016 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 CHROME_BROWSER_CHROMEOS_NOTE_TAKING_HELPER_H_
 #define CHROME_BROWSER_CHROMEOS_NOTE_TAKING_HELPER_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 62 matching lines @@
     virtual void OnAvailableNoteTakingAppsUpdated() = 0;
   };
 
   // Callback used to launch a Chrome app.
   using LaunchChromeAppCallback = base::Callback<void(
       Profile*,
       const extensions::Extension*,
       std::unique_ptr<extensions::api::app_runtime::ActionData>,
       const base::FilePath&)>;
 
+  // Extension manifest "action" entry value that specifies the app supports the
+  // new note flow.
+  static const char kChromeNewNoteAction[];
+
   // Intent action used to launch Android apps.
   static const char kIntentAction[];
 
   // Extension IDs for the development and released versions of the Google Keep
   // Chrome app.
   static const char kDevKeepExtensionId[];
   static const char kProdKeepExtensionId[];
 
   static void Initialize();
   static void Shutdown();
@@ skipping 104 matching lines @@
   content::NotificationRegistrar registrar_;
 
   base::WeakPtrFactory<NoteTakingHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NoteTakingHelper);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_NOTE_TAKING_HELPER_H_