Reland "Sync: Use IdentityManager instead of SigninManager"

This reverts commit fd8a3a1f.

Reason for revert: The depended-on CL has been relanded as https://crrev.com/c/1030451

Original change's description:
> Revert "Sync: Use IdentityManager instead of SigninManager"
> 
> This reverts commit aab57914.
> 
> Reason for revert: Depends on crrev.com/c/1025898 which was reverted
> 
> Original change's description:
> > Sync: Use IdentityManager instead of SigninManager
> > 
> > This CL migrates ProfileSyncService to IdentityManager for getting
> > info on the primary account. This includes switching from
> > SigninManagerBase::Observer to IdentityManager::Observer.
> > The only remaining use of SigninManager within PSS it to call
> > SignOut() which isn't exposed by IdentityManager yet.
> > 
> > Bug: 825190
> > Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
> > Change-Id: Icf9398d63794cab03cb559adba5c767e18c31c0a
> > Reviewed-on: https://chromium-review.googlesource.com/983914
> > Commit-Queue: Marc Treib <treib@chromium.org>
> > Reviewed-by: Mikel Astiz <mastiz@chromium.org>
> > Cr-Commit-Position: refs/heads/master@{#553973}
> 
> TBR=blundell@chromium.org,treib@chromium.org,mastiz@chromium.org
> 
> Change-Id: Ib40dbff0f1c8e5fba95cb9881681361abec5aeec
> No-Presubmit: true
> No-Tree-Checks: true
> No-Try: true
> Bug: 825190, 837201
> Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
> Reviewed-on: https://chromium-review.googlesource.com/1030372
> Reviewed-by: Marc Treib <treib@chromium.org>
> Commit-Queue: Marc Treib <treib@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#553997}

TBR=blundell@chromium.org,treib@chromium.org,mastiz@chromium.org

# Not skipping CQ checks because original CL landed > 1 day ago.

Bug: 825190, 837201
Change-Id: If6858f033ac8390acfc904379afbf9726a6301c2
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Reviewed-on: https://chromium-review.googlesource.com/1043885Reviewed-by: Marc Treib <treib@chromium.org>
Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Marc Treib <treib@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556026}

chrome/browser/sync/test/integration/profile_sync_service_harness.cc

@@ -176,9 +176,7 @@ bool ProfileSyncServiceHarness::SetupSync(syncer::ModelTypeSet synced_datatypes,
         IdentityManagerFactory::GetForProfile(profile_);
     identity_manager->SetPrimaryAccountSynchronouslyForTests(
         gaia_id_, username_, GenerateFakeOAuth2RefreshTokenString());
-    std::string account_id =
-        identity_manager->GetPrimaryAccountInfo().account_id;
-    service()->GoogleSigninSucceeded(account_id, username_);
+    service()->OnPrimaryAccountSet(identity_manager->GetPrimaryAccountInfo());
   } else {
     LOG(ERROR) << "Unsupported profile signin type.";
   }
@@ -284,8 +282,7 @@ bool ProfileSyncServiceHarness::StartSyncService() {
 
 void ProfileSyncServiceHarness::SignoutSyncService() {
   DCHECK(!username_.empty());
-  service()->GoogleSignedOut(
-      service()->GetAuthenticatedAccountInfo().account_id, username_);
+  service()->OnPrimaryAccountCleared(service()->GetAuthenticatedAccountInfo());
 }
 
 bool ProfileSyncServiceHarness::HasUnsyncedItems() {

components/browser_sync/profile_sync_service.cc

@@ -345,13 +345,13 @@ void ProfileSyncService::RegisterAuthNotifications() {
   DCHECK(thread_checker_.CalledOnValidThread());
   oauth2_token_service_->AddObserver(this);
   if (signin_)
-    signin_->GetSigninManager()->AddObserver(this);
+    signin_->GetIdentityManager()->AddObserver(this);
 }
 
 void ProfileSyncService::UnregisterAuthNotifications() {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (signin_)
-    signin_->GetSigninManager()->RemoveObserver(this);
+    signin_->GetIdentityManager()->RemoveObserver(this);
   if (oauth2_token_service_)
     oauth2_token_service_->RemoveObserver(this);
 }
@@ -1921,8 +1921,8 @@ void ProfileSyncService::OnSyncManagedPrefChange(bool is_sync_managed) {
   }
 }
 
-void ProfileSyncService::GoogleSigninSucceeded(const std::string& account_id,
-                                               const std::string& username) {
+void ProfileSyncService::OnPrimaryAccountSet(
+    const AccountInfo& primary_account_info) {
   DCHECK(thread_checker_.CalledOnValidThread());
   if (!IsEngineInitialized() ||
       GetAuthError().state() != GoogleServiceAuthError::NONE) {
@@ -1930,12 +1930,14 @@ void ProfileSyncService::GoogleSigninSucceeded(const std::string& account_id,
     is_auth_in_progress_ = true;
   }
 
-  if (oauth2_token_service_->RefreshTokenIsAvailable(account_id))
-    OnRefreshTokenAvailable(account_id);
+  if (oauth2_token_service_->RefreshTokenIsAvailable(
+          primary_account_info.account_id)) {
+    OnRefreshTokenAvailable(primary_account_info.account_id);
+  }
 }
 
-void ProfileSyncService::GoogleSignedOut(const std::string& account_id,
-                                         const std::string& username) {
+void ProfileSyncService::OnPrimaryAccountCleared(
+    const AccountInfo& previous_primary_account_info) {
   DCHECK(thread_checker_.CalledOnValidThread());
   sync_disabled_by_admin_ = false;
   UMA_HISTOGRAM_ENUMERATION("Sync.StopSource", syncer::SIGN_OUT,

components/browser_sync/profile_sync_service.h

@@ -20,7 +20,6 @@
 #include "base/timer/timer.h"
 #include "build/build_config.h"
 #include "components/signin/core/browser/gaia_cookie_manager_service.h"
-#include "components/signin/core/browser/signin_manager_base.h"
 #include "components/sync/base/experiments.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/base/sync_prefs.h"
@@ -44,6 +43,7 @@
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 #include "net/base/backoff_entry.h"
+#include "services/identity/public/cpp/identity_manager.h"
 #include "url/gurl.h"
 
 class ProfileOAuth2TokenService;
@@ -168,7 +168,7 @@ class ProfileSyncService : public syncer::SyncServiceBase,
                            public syncer::DataTypeManagerObserver,
                            public syncer::UnrecoverableErrorHandler,
                            public OAuth2TokenService::Observer,
-                           public SigninManagerBase::Observer,
+                           public identity::IdentityManager::Observer,
                            public GaiaCookieManagerService::Observer {
  public:
   using Status = syncer::SyncStatus;
@@ -381,11 +381,10 @@ class ProfileSyncService : public syncer::SyncServiceBase,
   bool IsPassphraseRequired() const override;
   syncer::ModelTypeSet GetEncryptedDataTypes() const override;
 
-  // SigninManagerBase::Observer implementation.
-  void GoogleSigninSucceeded(const std::string& account_id,
-                             const std::string& username) override;
-  void GoogleSignedOut(const std::string& account_id,
-                       const std::string& username) override;
+  // identity::IdentityManager::Observer implementation.
+  void OnPrimaryAccountSet(const AccountInfo& primary_account_info) override;
+  void OnPrimaryAccountCleared(
+      const AccountInfo& previous_primary_account_info) override;
 
   // GaiaCookieManagerService::Observer implementation.
   void OnGaiaAccountsInCookieUpdated(

components/browser_sync/profile_sync_service_unittest.cc

@@ -560,6 +560,8 @@ TEST_F(ProfileSyncServiceTest, EnableSyncAndSignOut) {
 
   signin_manager()->SignOut(signin_metrics::SIGNOUT_TEST,
                             signin_metrics::SignoutDelete::IGNORE_METRIC);
+  // Wait for PSS to be notified that the primary account has gone away.
+  base::RunLoop().RunUntilIdle();
   EXPECT_FALSE(service()->IsSyncActive());
 }
 #endif  // !defined(OS_CHROMEOS)
@@ -727,8 +729,8 @@ TEST_F(ProfileSyncServiceTest, CredentialErrorReturned) {
   std::string primary_account_id =
       signin_manager()->GetAuthenticatedAccountId();
   auth_service()->LoadCredentials(primary_account_id);
-  // Wait for PSS to be notified of the loaded credentials and send an access
-  // token request.
+  // Wait for ProfileSyncService to be notified of the loaded credentials and
+  // send an access token request.
   base::RunLoop().RunUntilIdle();
   auth_service()->IssueAllTokensForAccount(primary_account_id, "access token",
                                            base::Time::Max());
@@ -738,7 +740,7 @@ TEST_F(ProfileSyncServiceTest, CredentialErrorReturned) {
   // Emulate Chrome receiving a new, invalid LST. This happens when the user
   // signs out of the content area.
   auth_service()->UpdateCredentials(primary_account_id, "not a valid token");
-  // Again, wait for PSS to be notified.
+  // Again, wait for ProfileSyncService to be notified.
   base::RunLoop().RunUntilIdle();
   auth_service()->IssueErrorForAllPendingRequests(
       GoogleServiceAuthError(GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS));
@@ -772,8 +774,8 @@ TEST_F(ProfileSyncServiceTest, CredentialErrorClearsOnNewToken) {
   std::string primary_account_id =
       signin_manager()->GetAuthenticatedAccountId();
   auth_service()->LoadCredentials(primary_account_id);
-  // Wait for PSS to be notified of the loaded credentials and send an access
-  // token request.
+  // Wait for ProfileSyncService to be notified of the loaded credentials and
+  // send an access token request.
   base::RunLoop().RunUntilIdle();
   auth_service()->IssueAllTokensForAccount(primary_account_id, "access token",
                                            base::Time::Max());
@@ -783,8 +785,8 @@ TEST_F(ProfileSyncServiceTest, CredentialErrorClearsOnNewToken) {
   // Emulate Chrome receiving a new, invalid LST. This happens when the user
   // signs out of the content area.
   auth_service()->UpdateCredentials(primary_account_id, "not a valid token");
-  // Wait for PSS to be notified of the changed credentials and send a new
-  // access token request.
+  // Wait for ProfileSyncService to be notified of the changed credentials and
+  // send a new access token request.
   base::RunLoop().RunUntilIdle();
   auth_service()->IssueErrorForAllPendingRequests(
       GoogleServiceAuthError(GoogleServiceAuthError::INVALID_GAIA_CREDENTIALS));
@@ -795,7 +797,7 @@ TEST_F(ProfileSyncServiceTest, CredentialErrorClearsOnNewToken) {
 
   // Now emulate Chrome receiving a new, valid LST.
   auth_service()->UpdateCredentials(primary_account_id, "totally valid token");
-  // Again, wait for PSS to be notified.
+  // Again, wait for ProfileSyncService to be notified.
   base::RunLoop().RunUntilIdle();
   auth_service()->IssueTokenForAllPendingRequests(
       "this one works", base::Time::Now() + base::TimeDelta::FromDays(10));

components/sync/driver/signin_manager_wrapper.cc

@@ -4,7 +4,7 @@
 
 #include "components/sync/driver/signin_manager_wrapper.h"
 
-#include "components/signin/core/browser/signin_manager_base.h"
+#include "services/identity/public/cpp/identity_manager.h"
 
 SigninManagerWrapper::SigninManagerWrapper(
     identity::IdentityManager* identity_manager,
@@ -22,9 +22,9 @@ SigninManagerBase* SigninManagerWrapper::GetSigninManager() {
 }
 
 std::string SigninManagerWrapper::GetEffectiveUsername() const {
-  return signin_manager_->GetAuthenticatedAccountInfo().email;
+  return identity_manager_->GetPrimaryAccountInfo().email;
 }
 
 std::string SigninManagerWrapper::GetAccountIdToUse() const {
-  return signin_manager_->GetAuthenticatedAccountId();
+  return identity_manager_->GetPrimaryAccountInfo().account_id;
 }

components/sync/driver/sync_service_base.cc

@@ -13,12 +13,12 @@
 #include "base/syslog_logging.h"
 #include "components/invalidation/public/invalidation_service.h"
 #include "components/signin/core/browser/account_info.h"
-#include "components/signin/core/browser/signin_manager_base.h"
 #include "components/sync/base/report_unrecoverable_error.h"
 #include "components/sync/device_info/local_device_info_provider.h"
 #include "components/sync/driver/sync_driver_switches.h"
 #include "components/sync/engine/engine_components_factory_impl.h"
 #include "components/sync/engine/polling_constants.h"
+#include "services/identity/public/cpp/identity_manager.h"
 
 namespace syncer {
 
@@ -86,7 +86,7 @@ bool SyncServiceBase::HasObserver(const SyncServiceObserver* observer) const {
 
 AccountInfo SyncServiceBase::GetAuthenticatedAccountInfo() const {
   DCHECK(thread_checker_.CalledOnValidThread());
-  return signin_ ? signin_->GetSigninManager()->GetAuthenticatedAccountInfo()
+  return signin_ ? signin_->GetIdentityManager()->GetPrimaryAccountInfo()
                  : AccountInfo();
 }