Wire up the Chrome Sign In modal dialog from the password bubble promo.

chrome/browser/ui/passwords/manage_passwords_ui_controller.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 "chrome/browser/ui/passwords/manage_passwords_ui_controller.h"
 
 #include <utility>
 
 #include "base/auto_reset.h"
 #include "chrome/app/chrome_command_ids.h"
@@ skipping 315 matching lines @@
   chrome::Navigate(&params);
 }
 
 void ManagePasswordsUIController::NavigateToPasswordManagerSettingsPage() {
   chrome::ShowSettingsSubPage(
       chrome::FindBrowserWithWebContents(web_contents()),
       chrome::kPasswordManagerSubPage);
 }
 
 void ManagePasswordsUIController::NavigateToChromeSignIn() {
-  // TODO(http://crbug.com/615825): do the job.
+  Browser* browser = chrome::FindBrowserWithWebContents(web_contents());
+  browser->window()->ShowAvatarBubbleFromAvatarButton(
+      BrowserWindow::AVATAR_BUBBLE_MODE_SIGNIN,
+      signin::ManageAccountsParams(),
+      signin_metrics::AccessPoint::ACCESS_POINT_PASSWORD_BUBBLE);
 }
 
 void ManagePasswordsUIController::OnDialogHidden() {
   dialog_controller_.reset();
   if (GetState() == password_manager::ui::CREDENTIAL_REQUEST_STATE) {
     passwords_data_.TransitionToState(password_manager::ui::MANAGE_STATE);
     UpdateBubbleAndIconVisibility();
   }
 }
 
@@ skipping 88 matching lines @@
     passwords_data_.TransitionToState(password_manager::ui::MANAGE_STATE);
   }
 }
 
 void ManagePasswordsUIController::WebContentsDestroyed() {
   password_manager::PasswordStore* password_store =
       GetPasswordStore(web_contents());
   if (password_store)
     password_store->RemoveObserver(this);
 }