Add console message support to devtools. Does not actually cause logging to occur in the remote console.

components/devtools_traits/lib.rs

@@ -45,6 +45,7 @@ pub struct DevtoolsPageInfo {
 /// according to changes in the browser.
 pub enum DevtoolsControlMsg {
     NewGlobal(PipelineId, Sender<DevtoolScriptControlMsg>, DevtoolsPageInfo),
+    SendConsoleMessage(PipelineId, ConsoleMessage),
     ServerExitMsg
 }
 
@@ -123,3 +124,10 @@ impl Decodable for Modification {
         )
     }
 }
+
+//TODO: Include options for Warn, Debug, Info, Error messages from Console
+#[derive(Clone)]
+pub enum ConsoleMessage {
+    LogMessage(String),
+    //WarnMessage(String),
+}