Set the initial resolution of an RDP session to the client screen resolution if it is available.

remoting/protocol/session_config.cc

Index: remoting/protocol/session_config.cc
diff --git a/remoting/protocol/session_config.cc b/remoting/protocol/session_config.cc
index 1f05a83182bf91b7ce86337307b5191a9ff28c4a..4b0a20c15531c557710404801ff8d61afdcf0c46 100644
--- a/remoting/protocol/session_config.cc
+++ b/remoting/protocol/session_config.cc
@@ -11,6 +11,9 @@ namespace protocol {
 
 const int kDefaultStreamVersion = 2;
 
+// The control channel version that supports the "capabilities" message.
+const int kCapabilitiesControlStreamVersion = 3;
+
 ChannelConfig ChannelConfig::None() {
   return ChannelConfig();
 }
@@ -171,6 +174,10 @@ scoped_ptr<CandidateSessionConfig> CandidateSessionConfig::CreateDefault() {
   // Control channel.
   result->mutable_control_configs()->push_back(
       ChannelConfig(ChannelConfig::TRANSPORT_MUX_STREAM,
+                    kCapabilitiesControlStreamVersion,
+                    ChannelConfig::CODEC_UNDEFINED));
+  result->mutable_control_configs()->push_back(
+      ChannelConfig(ChannelConfig::TRANSPORT_MUX_STREAM,
                     kDefaultStreamVersion,
                     ChannelConfig::CODEC_UNDEFINED));
   result->mutable_control_configs()->push_back(