Revise about: and chrome: url handling.

chrome/browser/net/view_blob_internals_job_factory.cc

 // Copyright (c) 2011 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/net/view_blob_internals_job_factory.h"
 
 #include "base/string_util.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/chrome_blob_storage_context.h"
 #include "net/url_request/url_request.h"
 #include "webkit/blob/view_blob_internals_job.h"
 
 // static.
 bool ViewBlobInternalsJobFactory::IsSupportedURL(const GURL& url) {
-  return StartsWithASCII(url.spec(),
-                         chrome::kBlobViewInternalsURL,
-                         true /*case_sensitive*/);
+  return url.SchemeIs(chrome::kChromeUIScheme) &&
+         url.host() == chrome::kChromeUIBlobInternalsHost;
 }
 
 // static.
 net::URLRequestJob* ViewBlobInternalsJobFactory::CreateJobForRequest(
     net::URLRequest* request) {
   webkit_blob::BlobStorageController* blob_storage_controller =
       static_cast<ChromeURLRequestContext*>(request->context())->
           blob_storage_context()->controller();
   return new webkit_blob::ViewBlobInternalsJob(
       request, blob_storage_controller);
 }