Fix a bug where the JavaBridgeDispatcherHost is prematurely deleted

content/browser/renderer_host/java/java_bridge_dispatcher_host.h

Index: content/browser/renderer_host/java/java_bridge_dispatcher_host.h
diff --git a/content/browser/renderer_host/java/java_bridge_dispatcher_host.h b/content/browser/renderer_host/java/java_bridge_dispatcher_host.h
index 07fe6432d5e52935fed07de88effbf039707b882..0b33ccd357ccf6d2f34c4aecdbd61dce0620925f 100644
--- a/content/browser/renderer_host/java/java_bridge_dispatcher_host.h
+++ b/content/browser/renderer_host/java/java_bridge_dispatcher_host.h
@@ -39,9 +39,10 @@ class JavaBridgeDispatcherHost
   void AddNamedObject(const string16& name, NPObject* object);
   void RemoveNamedObject(const string16& name);
 
-  // RenderViewHostObserver override:
+  // RenderViewHostObserver overrides:
   // The IPC macros require this to be public.
   virtual bool Send(IPC::Message* msg) OVERRIDE;
+  virtual void RenderViewHostDestroyed() OVERRIDE;
 
  private:
   friend class base::RefCountedThreadSafe<JavaBridgeDispatcherHost>;