Revert of Change ProxyResolver::GetProxyForURL() to take a scoped_ptr<Request>* rather than a RequestHandle*

net/proxy/proxy_resolver_mac.cc

Index: net/proxy/proxy_resolver_mac.cc
diff --git a/net/proxy/proxy_resolver_mac.cc b/net/proxy/proxy_resolver_mac.cc
index c3d86b1c70b71e5c8dcd2f0c7b47e43ca5239d9c..d4f41191d0ae097ff85d1b511d6c59f73f26b77e 100644
--- a/net/proxy/proxy_resolver_mac.cc
+++ b/net/proxy/proxy_resolver_mac.cc
@@ -73,8 +73,12 @@
   int GetProxyForURL(const GURL& url,
                      ProxyInfo* results,
                      const CompletionCallback& callback,
-                     scoped_ptr<Request>* request,
+                     RequestHandle* request,
                      const BoundNetLog& net_log) override;
+
+  void CancelRequest(RequestHandle request) override;
+
+  LoadState GetLoadState(RequestHandle request) const override;
 
  private:
   const scoped_refptr<ProxyResolverScriptData> script_data_;
@@ -92,7 +96,7 @@
 int ProxyResolverMac::GetProxyForURL(const GURL& query_url,
                                      ProxyInfo* results,
                                      const CompletionCallback& /*callback*/,
-                                     scoped_ptr<Request>* /*request*/,
+                                     RequestHandle* /*request*/,
                                      const BoundNetLog& net_log) {
   base::ScopedCFTypeRef<CFStringRef> query_ref(
       base::SysUTF8ToCFStringRef(query_url.spec()));
@@ -199,6 +203,15 @@
   return OK;
 }
 
+void ProxyResolverMac::CancelRequest(RequestHandle request) {
+  NOTREACHED();
+}
+
+LoadState ProxyResolverMac::GetLoadState(RequestHandle request) const {
+  NOTREACHED();
+  return LOAD_STATE_IDLE;
+}
+
 }  // namespace
 
 ProxyResolverFactoryMac::ProxyResolverFactoryMac()