mash: Close the system tray bubble on click outside its bounds

ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.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 "ash/system/chromeos/virtual_keyboard/virtual_keyboard_tray.h"
 
 #include "ash/keyboard/keyboard_ui.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_util.h"
@@ skipping 66 matching lines @@
 
 base::string16 VirtualKeyboardTray::GetAccessibleNameForTray() {
   return l10n_util::GetStringUTF16(
       IDS_ASH_VIRTUAL_KEYBOARD_TRAY_ACCESSIBLE_NAME);
 }
 
 void VirtualKeyboardTray::HideBubbleWithView(
     const views::TrayBubbleView* bubble_view) {
 }
 
-bool VirtualKeyboardTray::ClickedOutsideBubble() {
-  return false;
-}
+void VirtualKeyboardTray::ClickedOutsideBubble() {}
 
 bool VirtualKeyboardTray::PerformAction(const ui::Event& event) {
   Shell::GetInstance()->keyboard_ui()->Show();
   return true;
 }
 
 void VirtualKeyboardTray::ButtonPressed(views::Button* sender,
                                         const ui::Event& event) {
   DCHECK_EQ(button_, sender);
   PerformAction(event);
 }
 
 void VirtualKeyboardTray::OnKeyboardEnabledStateChanged(bool new_value) {
   SetVisible(Shell::GetInstance()->keyboard_ui()->IsEnabled());
 }
 
 }  // namespace ash