Give ProfileChooserView signin button focus.

chrome/browser/ui/views/profiles/profile_chooser_view.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 74 matching lines @@
                      Browser* browser,
                      profiles::BubbleViewMode view_mode,
                      profiles::TutorialMode tutorial_mode,
                      signin::GAIAServiceType service_type);
   ~ProfileChooserView() override;
 
   // views::BubbleDelegateView:
   void Init() override;
   void WindowClosing() override;
   bool AcceleratorPressed(const ui::Accelerator& accelerator) override;
+  views::View* GetInitiallyFocusedView() override;
 
   // content::WebContentsDelegate:
   bool HandleContextMenu(const content::ContextMenuParams& params) override;
 
   // views::ButtonListener:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
 
   // views::LinkListener:
   void LinkClicked(views::Link* sender, int event_flags) override;
 
@@ skipping 168 matching lines @@
   // The current tutorial mode.
   profiles::TutorialMode tutorial_mode_;
 
   // The GAIA service type provided in the response header.
   signin::GAIAServiceType gaia_service_type_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileChooserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_PROFILES_PROFILE_CHOOSER_VIEW_H_