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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_
      6 #define CHROME_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_
      7 
      8 #include "content/public/common/page_transition_types.h"
      9 
     10 class ExtensionSet;
     11 class GURL;
     12 
     13 namespace WebKit {
     14 class WebFrame;
     15 }
     16 
     17 namespace extensions {
     18 
     19 // Encapsulates the policy for when chrome-extension:// and
     20 // chrome-extension-resource:// URLs can be requested.
     21 class ResourceRequestPolicy {
     22  public:
     23   // Returns true if the chrome-extension:// |resource_url| can be requested
     24   // from |frame_url|. In some cases this decision is made based upon how
     25   // this request was generated. Web triggered transitions are more restrictive
     26   // than those triggered through UI.
     27   static bool CanRequestResource(const GURL& resource_url,
     28                                  WebKit::WebFrame* frame,
     29                                  content::PageTransition transition_type,
     30                                  const ExtensionSet* loaded_extensions);
     31   // Returns true if the chrome-extension-resource:// |resource_url| can be
     32   // requested from |frame_url|.
     33   static bool CanRequestExtensionResourceScheme(const GURL& resource_url,
     34                                                 WebKit::WebFrame* frame);
     35 
     36  private:
     37   ResourceRequestPolicy();
     38 };
     39 
     40 }  // namespace extensions
     41 
     42 #endif  // CHROME_RENDERER_EXTENSIONS_RESOURCE_REQUEST_POLICY_H_
     43