changes from review

Author: camden-king

GoogleSignIn/Sources/GIDAuthStateMigration.m

@@ -33,7 +33,6 @@
 static NSString *const kDataProtectedMigrationCheckPerformedKey =
                                                       @"GID_DataProtectedMigrationCheckPerformed";
 
-
 // Keychain account used to store additional state in SDKs previous to v5, including GPPSignIn.
 static NSString *const kOldKeychainAccount = @"GooglePlus";
 
@@ -97,7 +96,7 @@ - (void)performDataProtectedMigrationIfNeeded {
   if ([defaults boolForKey:kDataProtectedMigrationCheckPerformedKey]) {
     return;
   }
-  // Migrate from the fileBasedKeychain to dataProtectedKeychain with GTMAppAuth 5.0.
+
   GTMKeychainAttribute *fileBasedKeychain = [GTMKeychainAttribute useFileBasedKeychain];
   NSSet *attributes = [NSSet setWithArray:@[fileBasedKeychain]];
   GTMKeychainStore *keychainStoreLegacy =

GoogleSignIn/Tests/Unit/GIDAuthStateMigrationTest.m

@@ -185,7 +185,6 @@ - (void)testMigrateIfNeeded_KeychainFailure_DataProtectedMigration {
 }
 
 #else
-
 - (void)testMigrateIfNeeded_NoPreviousMigration_GTMAppAuthMigration {
   [[[_mockUserDefaults stub] andReturn:_mockUserDefaults] standardUserDefaults];
   [[[_mockUserDefaults expect] andReturnValue:@NO] boolForKey:kGTMAppAuthMigrationCheckPerformedKey];