Add a method to WebContentsTester to set the loading state of the

content/test/web_contents_tester.h

 // 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.
 
 #ifndef CONTENT_TEST_WEB_CONTENTS_TESTER_H_
 #define CONTENT_TEST_WEB_CONTENTS_TESTER_H_
 #pragma once
 
 #include "content/public/common/page_transition_types.h"
 
@@ skipping 73 matching lines @@
   // in question have been made.
   virtual int GetNumberOfFocusCalls() = 0;
 
   virtual content::RenderViewHost* GetPendingRenderViewHost() const = 0;
 
   // Creates a pending navigation to the given URL with the default parameters
   // and then commits the load with a page ID one larger than any seen. This
   // emulates what happens on a new navigation.
   virtual void NavigateAndCommit(const GURL& url) = 0;
 
+  // Sets the loading state to the given value.
+  virtual void TestSetIsLoading(bool value) = 0;
+
   // Simulates the current RVH notifying that it has unloaded so that the
   // pending RVH navigation can proceed.
   // Does nothing if no cross-navigation is pending.
   virtual void ProceedWithCrossSiteNavigation() = 0;
 
   virtual void TestDidNavigate(content::RenderViewHost* render_view_host,
                                int page_id,
                                const GURL& url,
                                content::PageTransition transition) = 0;
 
   virtual void TestDidNavigateWithReferrer(
       content::RenderViewHost* render_view_host,
       int page_id,
       const GURL& url,
       const content::Referrer& referrer,
       content::PageTransition transition) = 0;
 
   // Promote GetWebkitPrefs to public.
   virtual WebPreferences TestGetWebkitPrefs() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_WEB_CONTENTS_TESTER_H_