SPDY - Added enabling of SPDY/3 to about:flags.

net/http/http_stream_factory.h

Index: net/http/http_stream_factory.h
===================================================================
--- net/http/http_stream_factory.h	(revision 128228)
+++ net/http/http_stream_factory.h	(working copy)
@@ -230,6 +230,16 @@
   // Check if a HostPortPair is excluded from using spdy.
   static bool HasSpdyExclusion(const HostPortPair& endpoint);
 
+  // Sets http/1.1, spdy/2, spdy/2.1 and spdy/3 as the protocols supported.
+  static void EnableSPDY3();
+
+  // Sets http/1.1, spdy/2 and spdy/2.1 as the protocols supported.
+  // If flow-control is enabled, received WINDOW_UPDATE and SETTINGS messages
+  // are processed and outstanding window size is actually obeyed when sending
+  // data frames, and WINDOW_UPDATE messages are generated when data is
+  // consumed.
+  static void EnableFlowControl();
+
   // Sets the protocols supported by NPN (next protocol negotiation) during the
   // SSL handshake as well as by HTTP Alternate-Protocol.
   static void SetNextProtos(const std::vector<std::string>& value);