Hotword Audio Verification App: Adds to hotwordPrivate API

chrome/browser/search/hotword_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SEARCH_HOTWORD_SERVICE_H_
 #define CHROME_BROWSER_SEARCH_HOTWORD_SERVICE_H_
 
 #include "base/basictypes.h"
 #include "base/memory/weak_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
@@ skipping 92 matching lines @@
   virtual bool UninstallHotwordExtension(ExtensionService* extension_service);
   virtual void InstallHotwordExtensionFromWebstore();
 
   // Sets the pref value of the previous language.
   void SetPreviousLanguagePref();
 
   // Returns the current error message id. A value of 0 indicates
   // no error.
   int error_message() { return error_message_; }
 
+  // These methods are for getting and setting the launch Mode of the
+  // Hotword Audio Verification App. The app needs to know the state of the
+  // Audio History and Hotword settings in order to know which opt-in flow
+  // to use.
+  //
+  // TODO(kcarattini): Remove this when
+  // https://code.google.com/p/chromium/issues/detail?id=165573 is fixed,
+  // at which time we can simply launch the app in the given mode instead of
+  // having to check for it here.
+  enum LaunchMode {
+    AUDIO_HISTORY_ONLY,
+    HOTWORD_ONLY,
+    HOTWORD_AND_AUDIO_HISTORY
+  };
+  void SetHotwordAudioVerificationLaunchState(const std::string& pref_name);
+  LaunchMode GetHotwordAudioVerificationLaunchState();
+
  private:
   Profile* profile_;
 
   PrefChangeRegistrar pref_registrar_;
 
   content::NotificationRegistrar registrar_;
 
   // For observing the ExtensionRegistry.
   ScopedObserver<extensions::ExtensionRegistry,
                  extensions::ExtensionRegistryObserver>
       extension_registry_observer_;
 
   scoped_refptr<extensions::WebstoreStandaloneInstaller> installer_;
 
   HotwordClient* client_;
   int error_message_;
   bool reinstall_pending_;
 
   base::WeakPtrFactory<HotwordService> weak_factory_;
 
+  // Stores a bit of state for the Hotword Audio Verification App.

[benwells, 2014/09/09 20:57:31]

Super nit: a bit? Meaning 0 or 1?

[kcarattini, 2014/09/10 08:14:28]

Done.

+  LaunchMode hotword_audio_verification_launch_state_;
+
   DISALLOW_COPY_AND_ASSIGN(HotwordService);
 };
 
 #endif  // CHROME_BROWSER_SEARCH_HOTWORD_SERVICE_H_