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

mojo/examples/launcher/launcher.cc

 // Copyright 2013 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 <stdio.h>
 #include <string>
 
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
@@ skipping 132 matching lines @@
 class LauncherController : public views::TextfieldController {
  public:
   explicit LauncherController(URLReceiver* url_receiver)
       : url_receiver_(url_receiver) {}
 
   void InitInWindow(aura::Window* parent) {
     views::Widget* widget = new views::Widget;
     views::Widget::InitParams params(views::Widget::InitParams::TYPE_POPUP);
     params.parent = parent;
     params.bounds = parent->bounds();
-    params.can_activate = true;
+    params.activatable = views::Widget::InitParams::ACTIVATABLE_YES;
     widget->Init(params);
 
     views::View* container = new views::View;
     container->set_background(
       views::Background::CreateSolidBackground(SK_ColorYELLOW));
     container->SetBorder(
       views::Border::CreateEmptyBorder(10, 10, 10, 10));
     container->SetLayoutManager(new views::FillLayout);
     widget->SetContentsView(container);
 
@@ skipping 122 matching lines @@
   //             Aura that doesn't define platform-specific stuff.
   aura::Env::CreateInstance(true);
 
   mojo::Application app(shell_handle);
   app.AddServiceConnector(
       new mojo::ServiceConnector<mojo::examples::LauncherImpl>());
 
   loop.Run();
   return MOJO_RESULT_OK;
 }