Integrate invalidation API into ChromeToMobileService.

chrome/browser/chrome_to_mobile_service.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_CHROME_TO_MOBILE_SERVICE_H_
 #define CHROME_BROWSER_CHROME_TO_MOBILE_SERVICE_H_
 
 #include <map>
 #include <set>
+#include <queue>
 #include <string>
 #include <vector>
 
 #include "base/file_path.h"
 #include "base/memory/weak_ptr.h"
 #include "base/string16.h"
 #include "base/timer.h"
 #include "base/values.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "chrome/common/net/gaia/oauth2_access_token_consumer.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "googleurl/src/gurl.h"
 #include "net/url_request/url_fetcher_delegate.h"
+#include "sync/notifier/sync_notifier_observer.h"
 
 class OAuth2AccessTokenFetcher;
 class Browser;
 class CloudPrintURL;
 class MockChromeToMobileService;
 class PrefService;
 class Profile;
 
 namespace net {
 class URLFetcher;
 }
 
 // ChromeToMobileService connects to the cloud print service to enumerate
 // compatible mobiles owned by its profile and send URLs and MHTML snapshots.
 class ChromeToMobileService : public ProfileKeyedService,
                               public net::URLFetcherDelegate,
                               public content::NotificationObserver,
-                              public OAuth2AccessTokenConsumer {
+                              public OAuth2AccessTokenConsumer,
+                              public syncer::SyncNotifierObserver {
  public:
   class Observer {
    public:
     virtual ~Observer();
 
     // Called on generation of the page's MHTML snapshot.
     virtual void SnapshotGenerated(const FilePath& path, int64 bytes) = 0;
 
     // Called after URLFetcher responses from sending the URL (and snapshot).
     virtual void OnSendComplete(bool success) = 0;
@@ skipping 52 matching lines @@
 
   // Returns true if the service has found any registered mobile devices.
   bool HasMobiles() const;
 
   // Get the non-NULL ListValue of mobile devices from the cloud print service.
   // The list is owned by PrefService, which outlives ChromeToMobileService.
   // Each device DictionaryValue contains strings "type", "name", and "id".
   // Virtual for unit test mocking.
   virtual const base::ListValue* GetMobiles() const;
 
-  // Request an updated mobile device list, request auth first if needed.
-  // Virtual for unit test mocking.
-  virtual void RequestMobileListUpdate();
-
   // Callback with an MHTML snapshot of the browser's selected WebContents.
   // Virtual for unit test mocking.
   virtual void GenerateSnapshot(Browser* browser,
                                 base::WeakPtr<Observer> observer);
 
   // Send the browser's selected WebContents to the specified mobile device.
   // Virtual for unit test mocking.
-  virtual void SendToMobile(const base::DictionaryValue& mobile,
+  virtual void SendToMobile(const base::DictionaryValue* mobile,
                             const FilePath& snapshot,
                             Browser* browser,
                             base::WeakPtr<Observer> observer);
 
   // Delete the snapshot file (should be called on observer destruction).
   // Virtual for unit test mocking.
   virtual void DeleteSnapshot(const FilePath& snapshot);
 
   // Log a metric for the "ChromeToMobile.Service" histogram.
   // Virtual for unit test mocking.
   virtual void LogMetric(Metric metric) const;
 
   // Opens the "Learn More" help article link in the supplied |browser|.
   void LearnMore(Browser* browser) const;
 
   // net::URLFetcherDelegate method.
   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
 
   // content::NotificationObserver method.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
   // OAuth2AccessTokenConsumer methods.
   virtual void OnGetTokenSuccess(const std::string& access_token,
                                  const base::Time& expiration_time) OVERRIDE;
   virtual void OnGetTokenFailure(const GoogleServiceAuthError& error) OVERRIDE;
 
+  // syncer::SyncNotifierObserver implementation.
+  virtual void OnNotificationsEnabled() OVERRIDE;
+  virtual void OnNotificationsDisabled(
+      syncer::NotificationsDisabledReason reason) OVERRIDE;
+  virtual void OnIncomingNotification(
+      const syncer::ObjectIdPayloadMap& id_payloads,
+      syncer::IncomingNotificationSource source) OVERRIDE;
+
  private:
   friend class MockChromeToMobileService;
 
   // Enable or disable Chrome To Mobile with the browsers' command controllers.
   // The feature state is automatically derived from internal conditions.
   void UpdateCommandState() const;
 
   // Handle the attempted creation of a temporary file for snapshot generation.
   // Alert the observer of failure or generate MHTML with an observer callback.
   void SnapshotFileCreated(base::WeakPtr<Observer> observer,
                            SessionID::id_type browser_id,
                            const FilePath& path,
                            bool success);
 
   // Create a cloud print job submission request for a URL or snapshot.
   net::URLFetcher* CreateRequest(const JobData& data);
 
   // Initialize cloud print URLFetcher requests.
   void InitRequest(net::URLFetcher* request);
 
   // Submit a cloud print job request with the requisite data.
   void SendRequest(net::URLFetcher* request, const JobData& data);
 
+  // Register to handle cloud print device list invalidations.
+  virtual void RegisterForDeviceListInvalidations();
+
   // Send the OAuth2AccessTokenFetcher request.
   // Virtual for unit test mocking.
   virtual void RequestAccessToken();
 
-  // Request account information to limit cloud print access to existing users.
-  void RequestAccountInfo();
+  // Send the cloud print URLFetcher device search request.
+  // Virtual for unit test mocking.
+  virtual void RequestDeviceSearch();
 
-  // Send the cloud print URLFetcher device search request.
-  void RequestDeviceSearch();
-
-  void HandleAccountInfoResponse();
   void HandleSearchResponse();
   void HandleSubmitResponse(const net::URLFetcher* source);
 
   base::WeakPtrFactory<ChromeToMobileService> weak_ptr_factory_;
 
   Profile* profile_;
 
+  // Sync invalidation service state. Chrome To Mobile requires this service to
+  // keep its mobile device list up to date and prevent page send failures.
+  bool sync_invalidation_enabled_;
+
   // Used to recieve TokenService notifications for GaiaOAuth2LoginRefreshToken.
   content::NotificationRegistrar registrar_;
 
   // Cloud print helper class and auth token.
   scoped_ptr<CloudPrintURL> cloud_print_url_;
   std::string access_token_;
 
   // The set of snapshots currently available.
   std::set<FilePath> snapshots_;
 
   // Map URLFetchers to observers for reporting OnSendComplete.
   typedef std::map<const net::URLFetcher*, base::WeakPtr<Observer> >
       RequestObserverMap;
   RequestObserverMap request_observer_map_;
 
   // The pending OAuth access token request and a timer for retrying on failure.
   scoped_ptr<OAuth2AccessTokenFetcher> access_token_fetcher_;
   base::OneShotTimer<ChromeToMobileService> auth_retry_timer_;
 
-  // The pending account information request and the cloud print access flag.
-  scoped_ptr<net::URLFetcher> account_info_request_;
-  bool cloud_print_accessible_;
-
   // The pending mobile device search request.
   scoped_ptr<net::URLFetcher> search_request_;
 
+  // A queue of tasks to perform after an access token is lazily initialized.
+  std::queue<base::Closure> task_queue_;
+
   DISALLOW_COPY_AND_ASSIGN(ChromeToMobileService);
 };
 
 #endif  // CHROME_BROWSER_CHROME_TO_MOBILE_SERVICE_H_