[GCM] Check-in with signed in accounts associates device to user

chrome/browser/services/gcm/gcm_profile_service.cc

 // Copyright (c) 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.
 
 #include "chrome/browser/services/gcm/gcm_profile_service.h"
 
+#include <map>
+
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 
 #if defined(OS_ANDROID)
 #include "components/gcm_driver/gcm_driver_android.h"
 #else
+#include "base/bind.h"
 #include "base/files/file_path.h"
+#include "base/memory/weak_ptr.h"
+#include "chrome/browser/services/gcm/gcm_account_tracker.h"
 #include "chrome/browser/services/gcm/gcm_desktop_utils.h"
 #include "chrome/browser/signin/profile_identity_provider.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "chrome/browser/ui/webui/signin/login_ui_service_factory.h"
 #include "chrome/common/chrome_constants.h"
 #include "components/gcm_driver/gcm_client_factory.h"
+#include "components/gcm_driver/gcm_driver_desktop.h"
 #include "components/signin/core/browser/signin_manager.h"
+#include "google_apis/gaia/account_tracker.h"
 #include "google_apis/gaia/identity_provider.h"
 #include "net/url_request/url_request_context_getter.h"
 #endif
 
 namespace gcm {
 
 #if !defined(OS_ANDROID)
+// Identity observer only has actual work to do when the user is acutally signed
+// in. It ensures that account tracker is taking
 class GCMProfileService::IdentityObserver : public IdentityProvider::Observer {
  public:
-  IdentityObserver(Profile* profile, GCMDriver* driver);
+  IdentityObserver(Profile* profile, GCMDriverDesktop* driver);
   virtual ~IdentityObserver();
 
   // IdentityProvider::Observer:
   virtual void OnActiveAccountLogin() OVERRIDE;
   virtual void OnActiveAccountLogout() OVERRIDE;
 
   std::string SignedInUserName() const;
 
+  // Called to inform IdentityObserver that a list of accounts was updated.
+  // |account_tokens| maps email addresses to OAuth2 access tokens.
+  // |account_removed| indicates whether an account has been removed since the
+  //     last time the callback was called.
+  void AccountsUpdated(const std::map<std::string, std::string>& account_tokens,
+                       bool removed_account);
+
  private:
-  GCMDriver* driver_;
+  Profile* profile_;
+  GCMDriverDesktop* driver_;
+  scoped_ptr<GCMAccountTracker> gcm_account_tracker_;
   scoped_ptr<IdentityProvider> identity_provider_;
 
   // The account ID that this service is responsible for. Empty when the service
   // is not running.
   std::string account_id_;
 
+  base::WeakPtrFactory<GCMProfileService::IdentityObserver> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(IdentityObserver);
 };
 
 GCMProfileService::IdentityObserver::IdentityObserver(Profile* profile,
-                                                      GCMDriver* driver)
-    : driver_(driver) {
+                                                      GCMDriverDesktop* driver)
+    : profile_(profile), driver_(driver), weak_ptr_factory_(this) {
   identity_provider_.reset(new ProfileIdentityProvider(
       SigninManagerFactory::GetForProfile(profile),
       ProfileOAuth2TokenServiceFactory::GetForProfile(profile),
       LoginUIServiceFactory::GetForProfile(profile)));
   identity_provider_->AddObserver(this);
 
   OnActiveAccountLogin();
 }
 
 GCMProfileService::IdentityObserver::~IdentityObserver() {
+  gcm_account_tracker_->Shutdown();
   identity_provider_->RemoveObserver(this);
 }
 
 void GCMProfileService::IdentityObserver::OnActiveAccountLogin() {
   // This might be called multiple times when the password changes.
   const std::string account_id = identity_provider_->GetActiveAccountId();
   if (account_id == account_id_)
     return;
   account_id_ = account_id;
 
   driver_->OnSignedIn();
+
+  if (!gcm_account_tracker_) {
+    scoped_ptr<gaia::AccountTracker> gaia_account_tracker(
+        new gaia::AccountTracker(identity_provider_.get(),
+                                 profile_->GetRequestContext()));
+
+    gcm_account_tracker_.reset(new GCMAccountTracker(
+        gaia_account_tracker.Pass(),
+        base::Bind(&GCMProfileService::IdentityObserver::AccountsUpdated,
+                   weak_ptr_factory_.GetWeakPtr())));
+  }
+
+  gcm_account_tracker_->Start();
 }
 
 void GCMProfileService::IdentityObserver::OnActiveAccountLogout() {
+  gcm_account_tracker_->Stop();
+  // TODO(fgorski): If we purge here, what should happen when we get
+  // OnActiveAccountLogin() right after that?
   driver_->Purge();
 }
 
 std::string GCMProfileService::IdentityObserver::SignedInUserName() const {
   return driver_->IsStarted() ? account_id_ : std::string();
 }
+
+void GCMProfileService::IdentityObserver::AccountsUpdated(
+    const std::map<std::string, std::string>& account_tokens,
+    bool account_removed) {
+  driver_->SetAccountsForCheckin(account_tokens, account_removed);
+}
 #endif  // !defined(OS_ANDROID)
 
 // static
 bool GCMProfileService::IsGCMEnabled(Profile* profile) {
   return profile->GetPrefs()->GetBoolean(prefs::kGCMChannelEnabled);
 }
 
 // static
 void GCMProfileService::RegisterProfilePrefs(
     user_prefs::PrefRegistrySyncable* registry) {
@@ skipping 18 matching lines @@
     scoped_ptr<GCMClientFactory> gcm_client_factory)
     : profile_(profile),
       push_messaging_service_(this, profile) {
   DCHECK(!profile->IsOffTheRecord());
 
   driver_ = CreateGCMDriverDesktop(
       gcm_client_factory.Pass(),
       profile_->GetPath().Append(chrome::kGCMStoreDirname),
       profile_->GetRequestContext());
 
-  identity_observer_.reset(new IdentityObserver(profile, driver_.get()));
+  identity_observer_.reset(new IdentityObserver(
+      profile, static_cast<gcm::GCMDriverDesktop*>(driver_.get())));
 }
 #endif  // defined(OS_ANDROID)
 
 GCMProfileService::GCMProfileService()
     : profile_(NULL),
       push_messaging_service_(this, NULL) {
 }
 
 GCMProfileService::~GCMProfileService() {
 }
@@ skipping 34 matching lines @@
   return identity_observer_ ? identity_observer_->SignedInUserName()
                             : std::string();
 #endif  // defined(OS_ANDROID)
 }
 
 void GCMProfileService::SetDriverForTesting(GCMDriver* driver) {
   driver_.reset(driver);
 }
 
 }  // namespace gcm