[Refactor] Consolidate the logic for whether a widget can be activated.

ash/touch/touch_observer_hud.cc

 // Copyright (c) 2012 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/touch/touch_observer_hud.h"
 
 #include "ash/root_window_controller.h"
 #include "ash/root_window_settings.h"
 #include "ash/shell.h"
 #include "ash/shell_window_ids.h"
@@ skipping 15 matching lines @@
 
   views::View* content = new views::View;
 
   const gfx::Size& display_size = display.size();
   content->SetSize(display_size);
 
   widget_ = new views::Widget();
   views::Widget::InitParams
       params(views::Widget::InitParams::TYPE_WINDOW_FRAMELESS);
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
-  params.can_activate = false;
+  params.activatable = views::Widget::InitParams::ACTIVATABLE_NO;
   params.accept_events = false;
   params.bounds = display.bounds();
   params.parent =
       Shell::GetContainer(root_window_, kShellWindowId_OverlayContainer);
   widget_->Init(params);
   widget_->SetContentsView(content);
   widget_->StackAtTop();
   widget_->Show();
 
   widget_->AddObserver(this);
@@ skipping 94 matching lines @@
       widget_->GetNativeView(),
       Shell::GetContainer(root_window_, kShellWindowId_OverlayContainer));
 
   RootWindowController* controller = GetRootWindowController(root_window_);
   SetHudForRootWindowController(controller);
 
   root_window_->AddPreTargetHandler(this);
 }
 
 }  // namespace ash