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

chrome/browser/ui/views/tabs/tab_strip.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 "chrome/browser/ui/views/tabs/tab_strip.h"
 
 #if defined(OS_WIN)
 #include <windowsx.h>
 #endif
 
@@ skipping 2333 matching lines @@
       point_down(point_down),
       file_supported(true) {
   arrow_view = new views::ImageView;
   arrow_view->SetImage(GetDropArrowImage(point_down));
 
   arrow_window = new views::Widget;
   views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
   params.keep_on_top = true;
   params.opacity = views::Widget::InitParams::TRANSLUCENT_WINDOW;
   params.accept_events = false;
-  params.can_activate = false;
   params.bounds = gfx::Rect(drop_indicator_width, drop_indicator_height);
   params.context = context->GetNativeView();
   arrow_window->Init(params);
   arrow_window->SetContentsView(arrow_view);
 }
 
 TabStrip::DropInfo::~DropInfo() {
   // Close eventually deletes the window, which deletes arrow_view too.
   arrow_window->Close();
 }
@@ skipping 281 matching lines @@
   else
     RemoveMessageLoopObserver();
 }
 
 bool TabStrip::GetAdjustLayout() const {
   if (!adjust_layout_)
     return false;
   return chrome::GetHostDesktopTypeForNativeView(
       GetWidget()->GetNativeView()) == chrome::HOST_DESKTOP_TYPE_ASH;
 }