Translate: URL check should be done at once

content/public/common/url_constants.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 CONTENT_PUBLIC_COMMON_URL_CONSTANTS_H_
 #define CONTENT_PUBLIC_COMMON_URL_CONSTANTS_H_
 
 #include "content/common/content_export.h"
 
 // Contains constants for known URLs and portions thereof.
 
 class GURL;
 
 // TODO(jam): rename this to content.
 namespace chrome {
 
 // Canonical schemes you can use as input to GURL.SchemeIs().
 // TODO(jam): some of these don't below in the content layer, but are accessed
 // from there.
 CONTENT_EXPORT extern const char kAboutScheme[];
 CONTENT_EXPORT extern const char kBlobScheme[];
 CONTENT_EXPORT extern const char kChromeDevToolsScheme[];
+CONTENT_EXPORT extern const char kChromeExtension[];

[Vladislav Kaznacheev, 2013/04/08 05:45:04]

You are introducing a constant to content module but it is only used in chrome
module. Why not use the existing constant from extensions/common/constants.h?

 CONTENT_EXPORT extern const char kChromeInternalScheme[];
 CONTENT_EXPORT extern const char kChromeUIScheme[];  // Used for WebUIs.
 CONTENT_EXPORT extern const char kDataScheme[];
 CONTENT_EXPORT extern const char kFileScheme[];
 CONTENT_EXPORT extern const char kFileSystemScheme[];
 CONTENT_EXPORT extern const char kFtpScheme[];
 CONTENT_EXPORT extern const char kGuestScheme[];
 CONTENT_EXPORT extern const char kChromeUIGpuHost[];
 CONTENT_EXPORT extern const char kHttpScheme[];
 CONTENT_EXPORT extern const char kHttpsScheme[];
@@ skipping 49 matching lines @@
 // invoked on any thread.
 CONTENT_EXPORT const char* const* GetSavableSchemes();
 
 // Returns true if the url has a scheme for WebUI.  See also
 // WebUIControllerFactory::UseWebUIForURL in the browser process.
 CONTENT_EXPORT bool HasWebUIScheme(const GURL& url);
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_URL_CONSTANTS_H_