Remove the HANDLED_EXTERNALLY status code.

chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc

 // 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.
 
 #include "chrome/browser/renderer_host/intercept_navigation_resource_throttle.h"
 
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/resource_request_info.h"
 #include "content/public/browser/resource_controller.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/referrer.h"
 #include "net/url_request/url_request.h"
 
 using content::BrowserThread;
 using content::ChildProcessSecurityPolicy;
 using content::Referrer;
 using content::RenderViewHost;
 using content::ResourceRequestInfo;
-using content::WebContents;
-using content::WebContentsDelegate;
 
 namespace {
 
 void CheckIfShouldIgnoreNavigationOnUIThread(
     int render_process_id,
     int render_view_id,
     const GURL& url,
     const Referrer& referrer,
     bool is_content_initiated,
     InterceptNavigationResourceThrottle::CheckOnUIThreadCallback
@@ skipping 74 matching lines @@
   // Defer request while we wait for the UI thread to check if the navigation
   // should be ignored.
   return true;
 }
 
 void InterceptNavigationResourceThrottle::OnResultObtained(
     bool should_ignore_navigation) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   if (should_ignore_navigation) {
-    // TODO(mkosiba): Cancel() results in a CANCELLED status but what we really
-    // want is a HANDLED_EXTERNALLY status.
-    controller()->Cancel();
+    controller()->CancelAndIgnore();
   } else {
     controller()->Resume();
   }
 }