Remove the HANDLED_EXTERNALLY status code.

chrome/browser/renderer_host/intercept_navigation_resource_throttle_unittest.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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "chrome/browser/renderer_host/intercept_navigation_resource_throttle.h"
 #include "chrome/test/base/chrome_render_view_host_test_harness.h"
@@ skipping 50 matching lines @@
   };
 
   MockResourceController()
       : status_(UNKNOWN) {
   }
 
   Status status() const { return status_; }
 
   // content::ResourceController
   virtual void Cancel() {
-    DCHECK(status_ == UNKNOWN);
+    NOTREACHED();
+  }
+  virtual void CancelAndIgnore() {
     status_ = CANCELLED;
     ContinueTestCase();
   }
   virtual void Resume() {
     DCHECK(status_ == UNKNOWN);
     status_ = RESUMED;
     ContinueTestCase();
   }
 
  private:
@@ skipping 196 matching lines @@
               RunThrottleWillStartRequestOnIOThread,
           base::Unretained(this),
           GURL(kUnsafeTestUrl),
           web_contents()->GetRenderViewHost()->GetProcess()->GetID(),
           web_contents()->GetRenderViewHost()->GetRoutingID(),
           base::Unretained(&defer)));
 
   // Wait for the request to finish processing.
   message_loop_.Run();
 }