Hook up CryptAuthGCMManager to the enrollment and device sync managers.

components/proximity_auth/cryptauth/cryptauth_device_manager.h

 // Copyright 2015 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_PROXIMITY_AUTH_CRYPTAUTH_CRYPTAUTH_DEVICE_MANAGER_H
 #define COMPONENTS_PROXIMITY_AUTH_CRYPTAUTH_CRYPTAUTH_DEVICE_MANAGER_H
 
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/time/clock.h"
 #include "base/time/time.h"
+#include "components/proximity_auth/cryptauth/cryptauth_gcm_manager.h"
 #include "components/proximity_auth/cryptauth/proto/cryptauth_api.pb.h"
 #include "components/proximity_auth/cryptauth/sync_scheduler.h"
 
 class PrefService;
 class PrefRegistrySimple;
 
 namespace proximity_auth {
 
 class CryptAuthClient;
 class CryptAuthClientFactory;
 
 // This class manages syncing and storing the user's phones that are registered
 // with CryptAuth and are capable of unlocking the user's other devices. These
 // phones are called "unlock keys".
 // The manager periodically syncs the user's devices from CryptAuth to keep the
 // list of unlock keys fresh. If a sync attempts fails, the manager will
 // schedule the next sync more aggressively to recover.
-class CryptAuthDeviceManager : public SyncScheduler::Delegate {
+class CryptAuthDeviceManager : public SyncScheduler::Delegate,
+                               public CryptAuthGCMManager::Observer {
  public:
   // Respresents the success result of a sync attempt.
   enum class SyncResult { SUCCESS, FAILURE };
 
   // Represents whether the list of unlock keys has changed after a sync
   // attempt completes.
   enum class DeviceChangeResult {
     UNCHANGED,
     CHANGED,
   };
 
   class Observer {
    public:
     // Called when a sync attempt is started.
     virtual void OnSyncStarted() = 0;
 
     // Called when a sync attempt finishes with the |success| of the request.
     // |devices_changed| specifies if the sync caused the stored unlock keys to
     // change.
     virtual void OnSyncFinished(SyncResult sync_result,
                                 DeviceChangeResult device_change_result) = 0;
 
     virtual ~Observer() {}
   };
 
   // Creates the manager:
   // |clock|: Used to determine the time between sync attempts.
   // |client_factory|: Creates CryptAuthClient instances to perform each sync.
+  // |gcm_manager|: Notifies when GCM push messages trigger device syncs.
+  //                Not owned and must outlive this instance.
   // |pref_service|: Stores syncing metadata and unlock key information to
   //                 persist across browser restarts. Must already be registered
   //                 with RegisterPrefs().
   CryptAuthDeviceManager(scoped_ptr<base::Clock> clock,
                          scoped_ptr<CryptAuthClientFactory> client_factory,
+                         CryptAuthGCMManager* gcm_manager,
                          PrefService* pref_service);
 
   ~CryptAuthDeviceManager() override;
 
   // Registers the prefs used by this class to the given |registry|.
   static void RegisterPrefs(PrefRegistrySimple* registry);
 
   // Starts device manager to begin syncing devices.
   void Start();
 
@@ skipping 27 matching lines @@
   // Returns a list of remote devices that can unlock the user's other devices.
   const std::vector<cryptauth::ExternalDeviceInfo>& unlock_keys() {
     return unlock_keys_;
   }
 
  protected:
   // Creates a new SyncScheduler instance. Exposed for testing.
   virtual scoped_ptr<SyncScheduler> CreateSyncScheduler();
 
  private:
+  // CryptAuthGCMManager::Observer:
+  void OnResyncMessage() override;
+
   // Updates |unlock_keys_| by fetching the list stored in |pref_service_|.
   void UpdateUnlockKeysFromPrefs();
 
   // SyncScheduler::Delegate:
   void OnSyncRequested(
       scoped_ptr<SyncScheduler::SyncRequest> sync_request) override;
 
   // Callback when |cryptauth_client_| completes with the response.
   void OnGetMyDevicesSuccess(const cryptauth::GetMyDevicesResponse& response);
   void OnGetMyDevicesFailure(const std::string& error);
 
   // Used to determine the time.
   scoped_ptr<base::Clock> clock_;
 
   // Creates CryptAuthClient instances for each sync attempt.
   scoped_ptr<CryptAuthClientFactory> client_factory_;
 
-  // Contains perferences that outlive the lifetime of this object and across
+  // Notifies when GCM push messages trigger device sync. Not owned and must
+  // outlive this instance.
+  CryptAuthGCMManager* gcm_manager_;
+
+  // Contains preferences that outlive the lifetime of this object and across
   // process restarts. |pref_service_| must outlive the lifetime of this
   // instance.
   PrefService* const pref_service_;
 
   // The unlock keys currently synced from CryptAuth.
   std::vector<cryptauth::ExternalDeviceInfo> unlock_keys_;
 
   // Schedules the time between device sync attempts.
   scoped_ptr<SyncScheduler> scheduler_;
 
   // Contains the SyncRequest that |scheduler_| requests when a device sync
   // attempt is made.
   scoped_ptr<SyncScheduler::SyncRequest> sync_request_;
 
   // The CryptAuthEnroller instance for the current sync attempt. A new
   // instance will be created for each individual attempt.
   scoped_ptr<CryptAuthClient> cryptauth_client_;
 
   // List of observers.
   base::ObserverList<Observer> observers_;
 
   base::WeakPtrFactory<CryptAuthDeviceManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CryptAuthDeviceManager);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_CRYPTAUTH_CRYPTAUTH_DEVICE_MANAGER_H