Avoid unnecessary URL parsing for GURL comparisons in //content

content/browser/frame_host/navigator_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/navigator_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 661 matching lines @@
     }
 
     delegate_->DidNavigateAnyFramePostCommit(
         render_frame_host, details, params);
   }
 }
 
 bool NavigatorImpl::ShouldAssignSiteForURL(const GURL& url) {
   // about:blank should not "use up" a new SiteInstance.  The SiteInstance can
   // still be used for a normal web site.
-  if (url == GURL(url::kAboutBlankURL))
+  if (url == url::kAboutBlankURL)
     return false;
 
   // The embedder will then have the opportunity to determine if the URL
   // should "use up" the SiteInstance.
   return GetContentClient()->browser()->ShouldAssignSiteForURL(url);
 }
 
 void NavigatorImpl::RequestOpenURL(
     RenderFrameHostImpl* render_frame_host,
     const GURL& url,
@@ skipping 544 matching lines @@
     if (navigation_handle)
       navigation_handle->update_entry_id_for_transfer(entry->GetUniqueID());
 
     controller_->SetPendingEntry(std::move(entry));
     if (delegate_)
       delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content