Move more extensions code into ChromeExtensionsRendererClient.

chrome/common/extensions/extension_process_policy.h

 // 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.
 
 #ifndef CHROME_COMMON_EXTENSIONS_EXTENSION_PROCESS_POLICY_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_PROCESS_POLICY_H_
 
-class ExtensionSet;
 class GURL;
 
 namespace extensions {
 
 class Extension;
+class ExtensionSet;
 
 // Returns the extension for the given URL.  Excludes extension objects for
 // bookmark apps, which do not use the app process model.
 const Extension* GetNonBookmarkAppExtension(const ExtensionSet& extensions,
                                             const GURL& url);
 
 // Check if navigating a toplevel page from |old_url| to |new_url| would cross
 // an extension process boundary (e.g. navigating from a web URL into an
 // extension URL).
 // We temporarily consider a workaround where we will keep non-app URLs in
 // an app process, but only if |should_consider_workaround| is true.  See
 // http://crbug.com/59285.
 bool CrossesExtensionProcessBoundary(
     const ExtensionSet& extensions,
     const GURL& old_url,
     const GURL& new_url,
     bool should_consider_workaround);
 
 }  // namespace extensions
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_PROCESS_POLICY_H_