Moves ash content specific tests into ash_content_unittests

ash/test/ash_test_views_delegate.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/test/ash_test_views_delegate.h"
 
 #include "ash/shell.h"
-#include "content/public/test/web_contents_tester.h"
 
 namespace ash {
 namespace test {
 
 AshTestViewsDelegate::AshTestViewsDelegate() {}
 
 AshTestViewsDelegate::~AshTestViewsDelegate() {}
 
-content::WebContents* AshTestViewsDelegate::CreateWebContents(
-    content::BrowserContext* browser_context,
-    content::SiteInstance* site_instance) {
-  return content::WebContentsTester::CreateTestWebContents(browser_context,
-                                                           site_instance);
-}
-
 void AshTestViewsDelegate::OnBeforeWidgetInit(
     views::Widget::InitParams* params,
     views::internal::NativeWidgetDelegate* delegate) {
   TestViewsDelegate::OnBeforeWidgetInit(params, delegate);
 
   if (!params->parent && !params->context && ash::Shell::HasInstance()) {
     // If the window has neither a parent nor a context add to the root.
     params->parent = ash::Shell::GetInstance()->GetPrimaryRootWindow();
   }
 }
 
 }  // namespace test
 }  // namespace ash