Support needed to measure user and service traffic in Chrome.

net/url_request/url_fetcher.h

Index: net/url_request/url_fetcher.h
diff --git a/net/url_request/url_fetcher.h b/net/url_request/url_fetcher.h
index 49196afd97900c9df2b1ed1374daaa2e1a2e1eae..0c3d79b07d440a5943433f351b6933cb961625b6 100644
--- a/net/url_request/url_fetcher.h
+++ b/net/url_request/url_fetcher.h
@@ -139,6 +139,13 @@ class NET_EXPORT URLFetcher {
   virtual void SetUploadData(const std::string& upload_content_type,
                              const std::string& upload_content) = 0;
 
+  // When a service uses URLFetcher to exchange some information, after
+  // completing the fetch procedure, it can call this function by passing its
+  // name, so its usage will be recorded in according histograms. (It is
+  // necessary to make proper histogram in histograms.xml file before calling
+  // this function.
+  void ReportYourUsage(const std::string& service) const;

[bengr, 2015/08/07 18:00:01]

How about this?
void ReportUsageUMA(const std::string& service_name) const;

[amohammadkhan, 2015/08/11 22:04:36]

Done.

+
   // Sets data only needed by POSTs.  All callers making POST requests should
   // call one of the SetUpload* methods before the request is started.
   // |upload_content_type| is the MIME type of the content, while
@@ -312,6 +319,15 @@ class NET_EXPORT URLFetcher {
   // if an error prevented any response from being received.
   virtual int GetResponseCode() const = 0;
 
+  // Total number of bytes received, including the headers and before
+  // uncompressing

[bengr, 2015/08/07 18:00:01]

Add a period.

[amohammadkhan, 2015/08/11 22:04:36]

Done.

+  virtual int64 GetBytesReceivedSize() const = 0;
+
+  // Total number of bytes sent including the header size and POST body. But
+  // this value is before compression, so it may not be a good representative of

[bengr, 2015/08/07 18:00:01]

Why report it then?

[amohammadkhan, 2015/08/11 22:04:36]

Done.

+  // number of received bytes on the wire.
+  virtual int64 GetBytesSentSize() const = 0;
+
   // Cookies received.
   virtual const ResponseCookies& GetCookies() const = 0;