ChromeOS Offline gaia: Don't do reload when using local (offline) gaia

Reason for this when build with Memory Sanitizer it causes delay between CallJS('...') and actual JS execution. In this particular case Chrome tries to CallJS('doReload') due to frame loading error. After that it loads offline Gaia and then function |doReload| starts to execute which causes hiding offline Gaia;

BUG=475516

Review URL: https://codereview.chromium.org/1151513002

Cr-Commit-Position: refs/heads/master@{#330920}

chrome/browser/chromeos/login/login_browsertest.cc

@@ -185,7 +185,6 @@ class LoginTest : public chromeos::LoginManagerTest {
     std::string message;
     do {
       ASSERT_TRUE(message_queue.WaitForMessage(&message));
-      LOG(ERROR) << message;
     } while (message != "\"switchToPassword\"");
 
     std::string set_password = password_input + ".value = '$Password'";
@@ -334,12 +333,7 @@ IN_PROC_BROWSER_TEST_F(LoginTest, PRE_GaiaAuthOffline) {
       chromeos::kAccountsPrefShowUserNamesOnSignIn, false);
 }
 
-#if defined(MEMORY_SANITIZER)
-#define MAYBE_GaiaAuthOffline DISABLED_GaiaAuthOffline
-#else
-#define MAYBE_GaiaAuthOffline GaiaAuthOffline
-#endif
-IN_PROC_BROWSER_TEST_F(LoginTest, MAYBE_GaiaAuthOffline) {
+IN_PROC_BROWSER_TEST_F(LoginTest, GaiaAuthOffline) {
   PrepareOfflineLogin();
   content::WindowedNotificationObserver session_start_waiter(
       chrome::NOTIFICATION_SESSION_STARTED,

chrome/browser/resources/chromeos/login/screen_gaia_signin.js

@@ -796,6 +796,8 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
      * Reloads extension frame.
      */
     doReload: function() {
+      if (this.isLocal)
+        return;
       this.error_ = 0;
       this.gaiaAuthHost_.reload();
       this.loading = true;