Add option to simulate alternate protocol always being present....

net/http/http_alternate_protocols.h

Index: net/http/http_alternate_protocols.h
===================================================================
--- net/http/http_alternate_protocols.h	(revision 57015)
+++ net/http/http_alternate_protocols.h	(working copy)
@@ -63,11 +63,21 @@
   // attempts to set the alternate protocol for |http_host_port_pair| will fail.
   void MarkBrokenAlternateProtocolFor(const HostPortPair& http_host_port_pair);
 
+  // Debugging to simulate presence of an AlternateProtocol.
+  // If we don't have an alternate protocol in the map for any given host/port
+  // pair, force this ProtocolPortPair.
+  static void ForceAlternateProtocol(const PortProtocolPair& pair);
+  static void DisableForcedAlternateProtocol();
+
  private:
   typedef std::map<HostPortPair, PortProtocolPair> ProtocolMap;
 
   ProtocolMap protocol_map_;
 
+  // The forced alternate protocol.  If not-null, there is a protocol being
+  // forced.
+  static PortProtocolPair* forced_alternate_protocol_;
+
   DISALLOW_COPY_AND_ASSIGN(HttpAlternateProtocols);
 };