Cleanup and IWYU-ify CocoaProfileTest and related tests.

chrome/browser/ui/cocoa/tabpose_window_unittest.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/tabpose_window.h"
 
 #include "base/mac/mac_util.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/cocoa/cocoa_profile_test.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::SiteInstance;
 
 class TabposeWindowTest : public CocoaProfileTest {
  public:
   virtual void SetUp() {
     CocoaProfileTest::SetUp();
@@ skipping 95 matching lines @@
   DCHECK_EQ([window selectedIndex], 0);
 
   [window selectTileAtIndexWithoutAnimation:1];
   model->CloseWebContentsAt(0, TabStripModel::CLOSE_NONE);
   DCHECK_EQ([window thumbnailLayerCount], 1u);
   DCHECK_EQ([window selectedIndex], 0);
 
   // Should release the window.
   [window mouseDown:nil];
 }