[GCM] Adding GCMAccountMapper to link signed in profile to accounts.

components/gcm_driver/gcm_client.h

 // Copyright 2014 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 COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_
 #define COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 123 matching lines @@
     bool connection_client_created;
     std::string connection_state;
     uint64 android_id;
     std::vector<std::string> registered_app_ids;
     int send_queue_size;
     int resend_queue_size;
 
     RecordedActivities recorded_activities;
   };
 
+  // Information about account and access token for that account.
+  // That information can be used for checkin or account mapping.
+  struct AccountTokenInfo {
+    std::string account_id;
+    std::string email;
+    std::string access_token;
+  };
+
   // A delegate interface that allows the GCMClient instance to interact with
   // its caller, i.e. notifying asynchronous event.
   class Delegate {
    public:
     // Called when the registration completed successfully or an error occurs.
     // |app_id|: application ID.
     // |registration_id|: non-empty if the registration completed successfully.
     // |result|: the type of the error if an error occured, success otherwise.
     virtual void OnRegisterFinished(const std::string& app_id,
                                     const std::string& registration_id,
@@ skipping 128 matching lines @@
   virtual void UpdateAccountMapping(const AccountMapping& account_mapping) = 0;
 
   // Removes the account mapping related to |account_id| from the persistent
   // store.
   virtual void RemoveAccountMapping(const std::string& account_id) = 0;
 };
 
 }  // namespace gcm
 
 #endif  // COMPONENTS_GCM_DRIVER_GCM_CLIENT_H_