Remove unnecessary calls to GURL()

ios/chrome/browser/browser_about_rewriter.cc

 // Copyright 2016 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 "ios/chrome/browser/browser_about_rewriter.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "components/url_formatter/url_fixer.h"
@@ skipping 14 matching lines @@
 }  // namespace
 
 bool WillHandleWebBrowserAboutURL(GURL* url, web::BrowserState* browser_state) {
   // Ensure that any cleanup done by FixupURL happens before the rewriting
   // phase that determines the virtual URL, by including it in an initial
   // URLHandler.  This prevents minor changes from producing a virtual URL,
   // which could lead to a URL spoof.
   *url = url_formatter::FixupURL(url->possibly_invalid_spec(), std::string());
 
   // Check that about: URLs are fixed up to chrome: by url_formatter::FixupURL.
-  DCHECK((*url == GURL(url::kAboutBlankURL)) ||
-         !url->SchemeIs(url::kAboutScheme));
+  DCHECK((*url == url::kAboutBlankURL) || !url->SchemeIs(url::kAboutScheme));
 
   // url_formatter::FixupURL translates about:foo into chrome://foo/.
   if (!url->SchemeIs(kChromeUIScheme))
     return false;
 
   std::string host(url->host());
   for (size_t i = 0; i < arraysize(kHostReplacements); ++i) {
     if (host != kHostReplacements[i].old_host_name)
       continue;
 
     host.assign(kHostReplacements[i].new_host_name);
     break;
   }
 
   GURL::Replacements replacements;
   replacements.SetHostStr(host);
   *url = url->ReplaceComponents(replacements);
 
   // Having re-written the URL, make the chrome: handler process it.
   return false;
 }