Adding histograms showing fraction of page load times

net/url_request/url_request_http_job.h

Index: net/url_request/url_request_http_job.h
===================================================================
--- net/url_request/url_request_http_job.h	(revision 145862)
+++ net/url_request/url_request_http_job.h	(working copy)
@@ -93,6 +93,8 @@
   virtual HostPortPair GetSocketAddress() const OVERRIDE;
   virtual void NotifyURLRequestDestroyed() OVERRIDE;
 
+  virtual void OnDetachRequest() OVERRIDE;
+
   HttpRequestInfo request_info_;
   const HttpResponseInfo* response_info_;
 
@@ -143,6 +145,8 @@
 
   class HttpFilterContext;
 
+  class HttpTransactionDelegateImpl;
+
   virtual ~URLRequestHttpJob();
 
   void RecordTimer();
@@ -234,6 +238,8 @@
   // to inform the NetworkDelegate that it may not call back.
   bool awaiting_callback_;
 
+  scoped_ptr<HttpTransactionDelegateImpl> http_transaction_delegate_;
+
   DISALLOW_COPY_AND_ASSIGN(URLRequestHttpJob);
 };