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

ash/shelf/shelf_widget.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/shelf/shelf_widget.h"
 
 #include "ash/ash_switches.h"
 #include "ash/focus_cycler.h"
 #include "ash/root_window_controller.h"
 #include "ash/session/session_state_delegate.h"
@@ skipping 403 matching lines @@
 
 void ShelfWidget::DelegateView::SetDimmed(bool value) {
   if (value == (dimmer_.get() != NULL))
     return;
 
   if (value) {
     dimmer_.reset(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.ownership = views::Widget::InitParams::WIDGET_OWNS_NATIVE_WIDGET;
     params.parent = shelf_->GetNativeView();
     dimmer_->Init(params);
     dimmer_->GetNativeWindow()->SetName("ShelfDimmer");
     dimmer_->SetBounds(shelf_->GetWindowBoundsInScreen());
     // The shelf should not take focus when it is initially shown.
     dimmer_->set_focus_on_creation(false);
     dimmer_view_ = new DimmerView(shelf_, disable_dimming_animations_for_test_);
     dimmer_->SetContentsView(dimmer_view_);
@@ skipping 366 matching lines @@
   DCHECK(delegate_view_);
   return delegate_view_->disable_dimming_animations_for_test();
 }
 
 void ShelfWidget::WillDeleteShelf() {
   shelf_layout_manager_->RemoveObserver(this);
   shelf_layout_manager_ = NULL;
 }
 
 }  // namespace ash