Remove the HANDLED_EXTERNALLY status code.

chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc

Index: chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc
diff --git a/chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc b/chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc
index 674aa5502be29a0c2d76d87ee6050b516a01a263..eaecef29a672c52c6eddc5309c208942482789a7 100644
--- a/chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc
+++ b/chrome/browser/renderer_host/intercept_navigation_resource_throttle.cc
@@ -10,9 +10,8 @@
 #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/base/net_errors.h"
 #include "net/url_request/url_request.h"
 
 using content::BrowserThread;
@@ -20,8 +19,6 @@ using content::ChildProcessSecurityPolicy;
 using content::Referrer;
 using content::RenderViewHost;
 using content::ResourceRequestInfo;
-using content::WebContents;
-using content::WebContentsDelegate;
 
 namespace {
 
@@ -118,9 +115,7 @@ void InterceptNavigationResourceThrottle::OnResultObtained(
   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()->CancelWithHandledExternally();
   } else {
     controller()->Resume();
   }