Move about://-related constants from //content to //url

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"
 #include "url/url_constants.h"
 
 // Contains constants for known URLs and portions thereof.
 
 namespace content {
 
 // 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 kChromeDevToolsScheme[];
 CONTENT_EXPORT extern const char kChromeUIScheme[];  // Used for WebUIs.
 CONTENT_EXPORT extern const char kGuestScheme[];
 CONTENT_EXPORT extern const char kMetadataScheme[];
 CONTENT_EXPORT extern const char kSwappedOutScheme[];
 CONTENT_EXPORT extern const char kViewSourceScheme[];
 
 // Hosts for about URLs.
-CONTENT_EXPORT extern const char kAboutBlankURL[];
 CONTENT_EXPORT extern const char kAboutSrcDocURL[];
 
 CONTENT_EXPORT extern const char kChromeUIAccessibilityHost[];
 CONTENT_EXPORT extern const char kChromeUIAppCacheInternalsHost[];
 CONTENT_EXPORT extern const char kChromeUIBlobInternalsHost[];
 CONTENT_EXPORT extern const char kChromeUIBrowserCrashHost[];
 CONTENT_EXPORT extern const char kChromeUIGpuHost[];
 CONTENT_EXPORT extern const char kChromeUIHistogramHost[];
 CONTENT_EXPORT extern const char kChromeUIIndexedDBInternalsHost[];
 CONTENT_EXPORT extern const char kChromeUIMediaInternalsHost[];
@@ skipping 24 matching lines @@
 // Full about URLs (including schemes).
 CONTENT_EXPORT extern const char kChromeUINetworkViewCacheURL[];
 CONTENT_EXPORT extern const char kChromeUIShorthangURL[];
 
 // Special URL used to swap out a view being rendered by another process.
 CONTENT_EXPORT extern const char kSwappedOutURL[];
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_URL_CONSTANTS_H_