Migrate ChromeBrowserStateManagerImpl to the IdentityManager

Move away from SigninManagerBase::GetAuthenticatedAccountId() and
AccountTrackerService::GetAccountInfo(), to rely on the IdentityManager.

Bug: 903835
Change-Id: Ia9b3f6251ad93b9cd6e042b54283b56fb0610bc8
Reviewed-on: https://chromium-review.googlesource.com/c/1333447Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Mario Sanchez Prada <mario@igalia.com>
Cr-Commit-Position: refs/heads/master@{#607614}

ios/chrome/browser/browser_state/BUILD.gn

@@ -122,6 +122,7 @@ source_set("browser_state_impl") {
     "//ios/web/net/cookies",
     "//net",
     "//net:extras",
+    "//services/identity/public/cpp",
   ]
   allow_circular_includes_from = [
     "//ios/chrome/browser",

ios/chrome/browser/browser_state/chrome_browser_state_manager_impl.cc

@@ -20,9 +20,7 @@
 #include "components/password_manager/core/browser/password_store.h"
 #include "components/prefs/pref_service.h"
 #include "components/signin/core/browser/account_fetcher_service.h"
-#include "components/signin/core/browser/account_tracker_service.h"
 #include "components/signin/core/browser/gaia_cookie_manager_service.h"
-#include "components/signin/core/browser/signin_manager.h"
 #include "components/signin/ios/browser/active_state_manager.h"
 #include "ios/chrome/browser/application_context.h"
 #include "ios/chrome/browser/browser_state/browser_state_info_cache.h"
@@ -36,11 +34,11 @@
 #include "ios/chrome/browser/signin/account_consistency_service_factory.h"
 #include "ios/chrome/browser/signin/account_fetcher_service_factory.h"
 #include "ios/chrome/browser/signin/account_reconcilor_factory.h"
-#include "ios/chrome/browser/signin/account_tracker_service_factory.h"
 #include "ios/chrome/browser/signin/gaia_cookie_manager_service_factory.h"
-#include "ios/chrome/browser/signin/signin_manager_factory.h"
+#include "ios/chrome/browser/signin/identity_manager_factory.h"
 #include "ios/chrome/browser/sync/profile_sync_service_factory.h"
 #include "ios/chrome/browser/unified_consent/unified_consent_service_factory.h"
+#include "services/identity/public/cpp/identity_manager.h"
 
 namespace {
 
@@ -235,12 +233,9 @@ void ChromeBrowserStateManagerImpl::AddBrowserStateToCache(
   if (browser_state->GetStatePath().DirName() != cache->GetUserDataDir())
     return;
 
-  SigninManagerBase* signin_manager =
-      ios::SigninManagerFactory::GetForBrowserState(browser_state);
-  AccountTrackerService* account_tracker =
-      ios::AccountTrackerServiceFactory::GetForBrowserState(browser_state);
-  AccountInfo account_info = account_tracker->GetAccountInfo(
-      signin_manager->GetAuthenticatedAccountId());
+  identity::IdentityManager* identity_manager =
+      IdentityManagerFactory::GetForBrowserState(browser_state);
+  AccountInfo account_info = identity_manager->GetPrimaryAccountInfo();
   base::string16 username = base::UTF8ToUTF16(account_info.email);
 
   size_t browser_state_index =