Inherits SupportsWeakPtr<T> instead of having WeakPtrFactory<T>

content/browser/renderer_host/resource_dispatcher_host_impl.h

Index: content/browser/renderer_host/resource_dispatcher_host_impl.h
diff --git a/content/browser/renderer_host/resource_dispatcher_host_impl.h b/content/browser/renderer_host/resource_dispatcher_host_impl.h
index 22276e6ed331cb079e1f5b922271196b4dcff9f4..f7c62743b1c7aaec8cdba6096d3f7c7eecf43d70 100644
--- a/content/browser/renderer_host/resource_dispatcher_host_impl.h
+++ b/content/browser/renderer_host/resource_dispatcher_host_impl.h
@@ -62,7 +62,8 @@ struct Referrer;
 class CONTENT_EXPORT ResourceDispatcherHostImpl
     : public ResourceDispatcherHost,
       public net::URLRequest::Delegate,
-      public SSLErrorHandler::Delegate {
+      public SSLErrorHandler::Delegate,
+      public base::SupportsWeakPtr<ResourceDispatcherHostImpl> {
  public:
   ResourceDispatcherHostImpl();
   virtual ~ResourceDispatcherHostImpl();
@@ -476,12 +477,6 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
   // request_id_.
   int request_id_;
 
-  // For running tasks.
-  base::WeakPtrFactory<ResourceDispatcherHostImpl> weak_factory_;
-
-  // For SSLErrorHandler::Delegate calls from SSLManager.
-  base::WeakPtrFactory<SSLErrorHandler::Delegate> ssl_delegate_weak_factory_;
-
   // True if the resource dispatcher host has been shut down.
   bool is_shutdown_;