[Webapp Refactor] Remove remoting.clientSession.

remoting/webapp/crd/js/client_plugin_impl.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview
  * Class that wraps low-level details of interacting with the client plugin.
  *
  * This abstracts a <embed> element and controls the plugin which does
  * the actual remoting work. It also handles differences between
@@ skipping 232 matching lines @@
     } else if (message.method == 'onConnectionReady') {
       var ready = base.getBooleanAttr(message.data, 'ready');
       handler.onConnectionReady(ready);
 
     } else if (message.method == 'setCapabilities') {
       /** @type {!Array<string>} */
       var capabilities = tokenize(
           base.getStringAttr(message.data, 'capabilities'));
       handler.onSetCapabilities(capabilities);
 
+    } else if (message.method == 'onFirstFrameReceived') {
+      handler.onFirstFrameReceived();
+
     }
   }
 
   if (message.method == 'hello') {
     // Resize in case we had to enlarge it to support click-to-play.
     this.hidePluginForClickToPlay_();
     this.pluginApiVersion_ = base.getNumberAttr(message.data, 'apiVersion');
     this.pluginApiMinVersion_ =
         base.getNumberAttr(message.data, 'apiMinVersion');
 
@@ skipping 41 matching lines @@
     base.getNumberAttr(message.data, 'renderLatency');
     base.getNumberAttr(message.data, 'roundtripLatency');
     this.perfStats_ =
         /** @type {remoting.ClientSession.PerfStats} */ (message.data);
 
   } else if (message.method == 'injectClipboardItem') {
     var mimetype = base.getStringAttr(message.data, 'mimeType');
     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,
     // then the value won't be there at all, so give it a default of false.
     var pairingSupported = base.getBooleanAttr(message.data, 'pairingSupported',
                                           false);
     this.credentials_.getPIN(pairingSupported).then(
         this.onPinFetched_.bind(this)
     );
 
@@ skipping 542 matching lines @@
 remoting.DefaultClientPluginFactory.prototype.preloadPlugin = function() {
   if (remoting.settings.CLIENT_PLUGIN_TYPE != 'pnacl') {
     return;
   }
 
   var plugin = remoting.ClientPluginImpl.createPluginElement_();
   plugin.addEventListener(
       'loadend', function() { document.body.removeChild(plugin); }, false);
   document.body.appendChild(plugin);
 };