Remove chrome/ code to handle App Notifications

chrome/browser/signin/signin_internals_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_SIGNIN_SIGNIN_INTERNALS_UTIL_H_
 #define CHROME_BROWSER_SIGNIN_SIGNIN_INTERNALS_UTIL_H_
 
 #include <map>
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
 
 namespace signin_internals_util {
 
 // Preference prefixes for signin and token values.
 extern const char kSigninPrefPrefix[];
 extern const char kTokenPrefPrefix[];
 
 // The following tokens are not under the purview of TokenService.
 extern const char kChromeToMobileToken[];
-extern const char kAppNotifyChannelSetupToken[];
 extern const char kOperationsBaseToken[];
 extern const char kUserPolicySigninServiceToken[];
 extern const char kProfileDownloaderToken[];
 extern const char kObfuscatedGaiaIdFetcherToken[];
 extern const char kOAuth2MintTokenFlowToken[];
 extern const char* kTokenPrefsArray[];
 extern const size_t kNumTokenPrefs;
 
 // Helper enums to access fields from SigninStatus (declared below).
 enum {
@@ skipping 104 matching lines @@
                                           bool update_time) {}
   virtual void NotifyTokenReceivedFailure(const std::string& token_name,
                                           const std::string& error) {}
   virtual void NotifyClearStoredToken(const std::string& token_name) {}
 
 };
 
 } // namespace
 
 #endif  // CHROME_BROWSER_SIGNIN_SIGNIN_INTERNALS_UTIL_H_