Bring up the Fast User Switcher on Shift+Click on the new Avatar Button

chrome/browser/ui/views/profiles/new_avatar_button.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/new_avatar_button.h"
 
 #include "base/win/windows_version.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/profiles/profiles_state.h"
@@ skipping 31 matching lines @@
 
 }  // namespace
 
 NewAvatarButton::NewAvatarButton(views::ButtonListener* listener,
                                  AvatarButtonStyle button_style,
                                  Browser* browser)
     : LabelButton(listener, base::string16()),
       browser_(browser),
       has_auth_error_(false),
       suppress_mouse_released_action_(false) {
+  set_triggerable_event_flags(
+      ui::EF_LEFT_MOUSE_BUTTON | ui::EF_RIGHT_MOUSE_BUTTON);
   set_animate_on_state_change(false);
   SetTextColor(views::Button::STATE_NORMAL, SK_ColorWHITE);
   SetTextColor(views::Button::STATE_HOVERED, SK_ColorWHITE);
   SetTextColor(views::Button::STATE_PRESSED, SK_ColorWHITE);
   SetTextSubpixelRenderingEnabled(false);
   SetHorizontalAlignment(gfx::ALIGN_CENTER);
 
   // The largest text height that fits in the button. If the font list height
   // is larger than this, it will be shrunk to match it.
   // TODO(noms): Calculate this constant algorithmically from the button's size.
@@ skipping 140 matching lines @@
   const int kDefaultImageTextSpacing = 5;
   SetImageLabelSpacing(use_generic_button ? 0 : kDefaultImageTextSpacing);
 
   InvalidateLayout();
 
   // Because the width of the button might have changed, the parent browser
   // frame needs to recalculate the button bounds and redraw it.
   if (parent())
     parent()->Layout();
 }