Add SetUploadDataStream method to URLFetcher.

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 79bbd173f05e5d9d59a7141f888298dcfdebde8a..211994dd59079a12c589494f4dbe32eee540c6f0 100644
--- a/net/url_request/url_fetcher.h
+++ b/net/url_request/url_fetcher.h
@@ -10,6 +10,7 @@
 
 #include "base/callback_forward.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/platform_file.h"
 #include "base/supports_user_data.h"
 #include "base/task_runner.h"
@@ -27,6 +28,7 @@ namespace net {
 class HostPortPair;
 class HttpRequestHeaders;
 class HttpResponseHeaders;
+class UploadDataStream;
 class URLFetcherDelegate;
 class URLRequestContextGetter;
 class URLRequestStatus;
@@ -116,9 +118,15 @@ class NET_EXPORT URLFetcher {
   static void SetEnableInterceptionForTests(bool enabled);
 
   // Sets data only needed by POSTs.  All callers making POST requests should
-  // call this before the request is started.  |upload_content_type| is the MIME
-  // type of the content, while |upload_content| is the data to be sent (the
-  // Content-Length header value will be set to the length of this data).
+  // call one of the SetUploadData* methods before the request is started.
+  // |upload_content_type| is the MIME type of the content, while
+  // |upload_content| is the data to be sent.
+  virtual void SetUploadDataStream(
+      const std::string& upload_content_type,
+      scoped_ptr<UploadDataStream> upload_content) = 0;
+
+  // Convenience method for setting upload data from a string.
+  // (the Content-Length header value will be set to the length of this data).
   virtual void SetUploadData(const std::string& upload_content_type,
                              const std::string& upload_content) = 0;