[Webapp Refactor] Remove remoting.clientSession.

remoting/webapp/crd/js/client_plugin_impl.js

Index: remoting/webapp/crd/js/client_plugin_impl.js
diff --git a/remoting/webapp/crd/js/client_plugin_impl.js b/remoting/webapp/crd/js/client_plugin_impl.js
index c2ba6c09f175546cf0d0e7c83c0df9309feeb5b4..c9b2144ca914daf0bdc5440b66b4df6d3c6e589d 100644
--- a/remoting/webapp/crd/js/client_plugin_impl.js
+++ b/remoting/webapp/crd/js/client_plugin_impl.js
@@ -250,6 +250,9 @@ remoting.ClientPluginImpl.prototype.handleMessageMethod_ = function(message) {
           base.getStringAttr(message.data, 'capabilities'));
       handler.onSetCapabilities(capabilities);
 
+    } else if (message.method == 'onFirstFrameReceived') {
+      handler.onFirstFrameReceived();
+
     }
   }
 
@@ -311,11 +314,6 @@ remoting.ClientPluginImpl.prototype.handleMessageMethod_ = function(message) {
     var item = base.getStringAttr(message.data, 'item');
     this.updateClipboardData_(mimetype, item);
 
-  } else if (message.method == 'onFirstFrameReceived') {
-    if (remoting.clientSession) {
-      remoting.clientSession.onFirstFrameReceived();
-    }
-
   } else if (message.method == 'fetchPin') {
     // The pairingSupported value in the dictionary indicates whether both
     // client and host support pairing. If the client doesn't support pairing,