Update profile switcher button on Linux.

chrome/browser/ui/views/profiles/profile_chooser_view.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/views/profiles/profile_chooser_view.h"
 
 #include "base/macros.h"
 #include "base/metrics/user_metrics.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/app/vector_icons/vector_icons.h"
@@ skipping 528 matching lines @@
   if (is_source_keyboard)
     profile_bubble_->FocusFirstProfileButton();
 }
 
 // static
 bool ProfileChooserView::IsShowing() {
   return profile_bubble_ != NULL;
 }
 
 // static
+views::Widget* ProfileChooserView::GetCurrentBubbleWidget() {
+  return profile_bubble_ ? profile_bubble_->GetWidget() : nullptr;
+}
+
+// static
 void ProfileChooserView::Hide() {
   if (IsShowing())
     profile_bubble_->GetWidget()->Close();
 }
 
 ProfileChooserView::ProfileChooserView(views::View* anchor_view,
                                        Browser* browser,
                                        profiles::BubbleViewMode view_mode,
                                        profiles::TutorialMode tutorial_mode,
                                        signin::GAIAServiceType service_type,
@@ skipping 1333 matching lines @@
       IncognitoModePrefs::GetAvailability(browser_->profile()->GetPrefs()) !=
           IncognitoModePrefs::DISABLED;
   return incognito_available && !browser_->profile()->IsGuestSession();
 }
 
 void ProfileChooserView::PostActionPerformed(
     ProfileMetrics::ProfileDesktopMenu action_performed) {
   ProfileMetrics::LogProfileDesktopMenu(action_performed, gaia_service_type_);
   gaia_service_type_ = signin::GAIA_SERVICE_TYPE_NONE;
 }