Make sure sync setup completes when signing in from the avatar bubble with modal warnings

chrome/browser/ui/sync/one_click_signin_helper.cc

 // Copyright (c) 2012 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 "chrome/browser/ui/sync/one_click_signin_helper.h"
 
 #include <algorithm>
 #include <functional>
 #include <utility>
 #include <vector>
@@ skipping 1169 matching lines @@
     // tab.
 
     // No need to display a second confirmation so pass false below.
     // TODO(atwilson): Move this into OneClickSigninSyncStarter.
     // The tab modal dialog always executes its callback before |contents|
     // is deleted.
     Browser* browser = chrome::FindLastActiveWithProfile(
         profile, chrome::GetActiveDesktop());
     content::WebContents* contents =
         browser->tab_strip_model()->GetActiveWebContents();
+
+    // If the user signs in from the new avatar bubble, the confirm email dialog
+    // would dismiss the avatar bubble, thus it won't show any confirmation upon
+    // sign in completes. This confirmation dialog already mentions that user
+    // data would be synced, thus we just start sync immediately.
+    // TODO(guohui): add a sync settings link to allow user to configure sync
+    // settings before sync starts.
+    if (start_mode == OneClickSigninSyncStarter::CONFIRM_SYNC_SETTINGS_FIRST)
+      start_mode = OneClickSigninSyncStarter::SYNC_WITH_DEFAULT_SETTINGS;
+
     ConfirmEmailDialogDelegate::AskForConfirmation(
         contents,
         last_email,
         email,
         base::Bind(
             &StartExplicitSync,
             StartSyncArgs(profile, browser, auto_accept,
                           session_index, email, password,
                           refresh_token,
                           contents, false /* confirmation_required */, source,
@@ skipping 414 matching lines @@
     // If the web contents is showing a blank page and not about to be closed,
     // redirect to the NTP or apps page.
     if (signin::IsContinueUrlForWebBasedSigninFlow(current_url) &&
         !signin::IsAutoCloseEnabledInURL(original_continue_url_)) {
       RedirectToNtpOrAppsPage(
           web_contents(),
           signin::GetSourceForPromoURL(original_continue_url_));
     }
   }
 }