Introduce the ThrottleManager

content/public/test/navigation_simulator.h

Index: content/public/test/navigation_simulator.h
diff --git a/content/public/test/navigation_simulator.h b/content/public/test/navigation_simulator.h
index 783546c1d25377afb2290aacf5ab13d95dce6b46..e239168e6320cf9c1f0db3aeff53136b33574c23 100644
--- a/content/public/test/navigation_simulator.h
+++ b/content/public/test/navigation_simulator.h
@@ -120,6 +120,10 @@ class NavigationSimulator : public WebContentsObserver {
   // or pushState/popState navigations.
   virtual void CommitSameDocument();
 
+  // Must be called after the simulated navigation or an error page has
+  // committed. Returns the RenderFrameHost the navigation committed in.
+  virtual RenderFrameHost* GetFinalRenderFrameHost();
+
   // --------------------------------------------------------------------------
 
   // The following functions are used to specify the parameters of the