Revert of Cross-process iframe accessibility.

content/browser/site_per_process_browsertest.h

-// Copyright (c) 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 "content/public/test/content_browser_test.h"
-#include "url/gurl.h"
-
-namespace content {
-
-class Shell;
-
-class SitePerProcessBrowserTest : public ContentBrowserTest {
- public:
-  SitePerProcessBrowserTest();
-
- protected:
-  // Start at a data URL so each extra navigation creates a navigation entry.
-  // (The first navigation will silently be classified as AUTO_SUBFRAME.)
-  // TODO(creis): This won't be necessary when we can wait for LOAD_STOP.
-  void StartFrameAtDataURL();
-
-  bool NavigateIframeToURL(Shell* window,
-                           const GURL& url,
-                           std::string iframe_id);
-
-  virtual void SetUpCommandLine(base::CommandLine* command_line) OVERRIDE;
-};
-
-}  // namespace content