Add schema chrome-extension-resource:// for extension resources

chrome/renderer/extensions/extension_resource_request_policy.h

Index: chrome/renderer/extensions/extension_resource_request_policy.h
diff --git a/chrome/renderer/extensions/extension_resource_request_policy.h b/chrome/renderer/extensions/extension_resource_request_policy.h
index cb59bca242914e85427147200e349d7522abc677..329b5a0adb24ea361b82b76a9ff51c93694b2ede 100644
--- a/chrome/renderer/extensions/extension_resource_request_policy.h
+++ b/chrome/renderer/extensions/extension_resource_request_policy.h
@@ -12,13 +12,20 @@ namespace WebKit {
 class WebFrame;
 }
 
-// Encapsulates the policy for when chrome-extension:// URLs can be requested.
+// Encapsulates the policy for when chrome-extension:// and
+// chrome-extension-resource:// URLs can be requested.
 class ExtensionResourceRequestPolicy {
  public:
-  // Returns true if the |resource_url| can be requested from |frame_url|.
+  // Returns true if the chrome-extension:// |resource_url| can be requested
+  // from |frame_url|.
   static bool CanRequestResource(const GURL& resource_url,
                                  WebKit::WebFrame* frame,
                                  const ExtensionSet* loaded_extensions);
+  // Returns true if the chrome-extension-resource:// |resource_url| can be
+  // requested from |frame_url|.
+  static bool CanRequestExtensionResourceScheme(
+      const GURL& resource_url,
+      WebKit::WebFrame* frame);
 
  private:
   ExtensionResourceRequestPolicy();