Add full support for filesystem URLs.

chrome/browser/extensions/api/webrequest/webrequest_api.cc

 // 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.
 
 #include "chrome/browser/extensions/api/webrequest/webrequest_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/json/json_writer.h"
@@ skipping 143 matching lines @@
       extension_urls::IsWebstoreUpdateUrl(url_without_query) ||
       extension_urls::IsBlacklistUpdateUrl(url);
 }
 
 // Returns true if the scheme is one we want to allow extensions to have access
 // to. Extensions still need specific permissions for a given URL, which is
 // covered by CanExtensionAccessURL.
 bool HasWebRequestScheme(const GURL& url) {
   return (url.SchemeIs(chrome::kAboutScheme) ||
           url.SchemeIs(chrome::kFileScheme) ||
+          url.SchemeIs(chrome::kFileSystemScheme) ||
           url.SchemeIs(chrome::kFtpScheme) ||
           url.SchemeIs(chrome::kHttpScheme) ||
           url.SchemeIs(chrome::kHttpsScheme) ||
           url.SchemeIs(chrome::kExtensionScheme));
 }
 
 // Returns true if requests for |url| shall not be reported to extensions.
 bool HideRequestForURL(const GURL& url) {
   return IsSensitiveURL(url) || !HasWebRequestScheme(url);
 }
@@ skipping 1565 matching lines @@
       } else if ((*it)->name().find("AdBlock") != std::string::npos) {
         adblock = true;
       } else {
         other = true;
       }
     }
   }
 
   host->Send(new ExtensionMsg_UsingWebRequestAPI(adblock, adblock_plus, other));
 }