Fix AccountInfo uninitialized memory issues.

components/signin/core/browser/account_tracker_service_unittest.cc

 // Copyright 2014 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 <algorithm>
 #include <vector>
 
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/scoped_user_pref_update.h"
 #include "base/prefs/testing_pref_service.h"
@@ skipping 647 matching lines @@
       account_tracker()->PickAccountIdForAccount(gaia_id, email);
   account_tracker()->SeedAccountInfo(gaia_id, email);
 
   infos = account_tracker()->GetAccounts();
   EXPECT_EQ(1u, infos.size());
   EXPECT_EQ(account_id, infos[0].account_id);
   EXPECT_EQ(gaia_id, infos[0].gaia);
   EXPECT_EQ(email, infos[0].email);
 }
 
-// Fails under MSan. crbug.com/577333
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_SeedAccountInfoFull DISABLED_SeedAccountInfoFull
-#else
-#define MAYBE_SeedAccountInfoFull SeedAccountInfoFull
-#endif
-TEST_F(AccountTrackerServiceTest, MAYBE_SeedAccountInfoFull) {
+TEST_F(AccountTrackerServiceTest, SeedAccountInfoFull) {
   AccountTrackerObserver observer;
   account_tracker()->AddObserver(&observer);
 
   AccountInfo info;
   info.gaia = AccountIdToGaiaId("alpha");
   info.email = AccountIdToEmail("alpha");
   info.full_name = AccountIdToFullName("alpha");
   info.account_id = account_tracker()->SeedAccountInfo(info);
 
   // Validate that seeding an unexisting account works and doesn't send a
@@ skipping 527 matching lines @@
   ASSERT_FALSE(info.is_child_account);
   ASSERT_TRUE(observer.CheckEvents(TrackingEvent(UPDATED, child_id)));
 
   SimulateTokenRevoked(child_id);
   ASSERT_TRUE(observer.CheckEvents(TrackingEvent(REMOVED, child_id)));
 
   tracker.RemoveObserver(&observer);
   fetcher.Shutdown();
   tracker.Shutdown();
 }