Revert 153131 (Histograms showed it doesn't help much)

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 156013)
+++ net/url_request/url_request_http_job.h	(working copy)
@@ -65,12 +65,6 @@
 
   void RestartTransactionWithAuth(const AuthCredentials& credentials);
 
-  void RetryRequestOnError(int result);
-
-  // Returns true if this request should be retried after receiving the given
-  // error as a result of a call to Start.
-  bool ShouldRetryRequest(int result) const;
-
   // Overridden from URLRequestJob:
   virtual void SetUpload(UploadData* upload) OVERRIDE;
   virtual void SetExtraRequestHeaders(
@@ -156,8 +150,6 @@
   void RecordTimer();
   void ResetTimer();
 
-  void RecordRetryResult(int result) const;
-
   virtual void UpdatePacketReadTimes() OVERRIDE;
   void RecordPacketStats(FilterContext::StatisticSelector statistic) const;
 
@@ -249,15 +241,6 @@
 
   scoped_ptr<HttpTransactionDelegateImpl> http_transaction_delegate_;
 
-  // True if the request job has automatically retried the request as a result
-  // of an error.
-  bool has_retried_;
-
-  // The network error code error that |this| was automatically retried as a
-  // result of, if any.  If this request has not been retried, must be 0.
-  // Reset once it's been used to log histograms.
-  int error_before_retry_;
-
   DISALLOW_COPY_AND_ASSIGN(URLRequestHttpJob);
 };