Move ContentBrowserSanityChecker and WebContentsObserverSanityChecker from content/public/test to c…

content/public/test/content_browser_sanity_checker.h

-// 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.
-
-#ifndef CONTENT_PUBLIC_TEST_CONTENT_BROWSER_SANITY_CHECKER_H_
-#define CONTENT_PUBLIC_TEST_CONTENT_BROWSER_SANITY_CHECKER_H_
-
-#include "base/basictypes.h"
-#include "base/callback.h"
-
-namespace content {
-
-class WebContents;
-
-// While an instance of this class exists, a bunch of sanity-checks are enabled
-// to validate the correctness of the browser side of the content layer
-// implementation. It's good to enable these in both unit tests and browser
-// tests, as a means of detecting bugs in the implementation of the content api.
-//
-// These checks should typically be enabled by the base class of any test
-// framework that would instantiate a WebContents -- ContentBrowserTest::SetUp,
-// RenderViewHostTestHarness::SetUp, and so forth. Individual tests won't
-// typically need to enable them.
-//
-// For the nuts and bolts of what the checks enforce, see the implementation.
-class ContentBrowserSanityChecker {
- public:
-  ContentBrowserSanityChecker();
-  ~ContentBrowserSanityChecker();
-
- private:
-  void OnWebContentsCreated(WebContents* web_contents);
-
-  // The callback needs to be cached so that it can be unregistered.
-  base::Callback<void(WebContents*)> creation_hook_;
-
-  DISALLOW_COPY_AND_ASSIGN(ContentBrowserSanityChecker);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_TEST_CONTENT_BROWSER_SANITY_CHECKER_H_