Make PostMessageToJavaScript use new WebKit API instead of script.

webkit/plugins/ppapi/message_channel.h

 // Copyright (c) 2011 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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_MESSAGE_CHANNEL_H_
 #define WEBKIT_PLUGINS_PPAPI_MESSAGE_CHANNEL_H_
 
 #include "base/task.h"
 #include "ppapi/shared_impl/resource.h"
 #include "third_party/npapi/bindings/npruntime.h"
 
 struct PP_Var;
+namespace WebKit {
+class WebSerializedScriptValue;
+}
 
 namespace webkit {
 namespace ppapi {
 
 class PluginInstance;
 
 // MessageChannel implements bidirectional postMessage functionality, allowing
 // calls from JavaScript to plugins and vice-versa. See
 // PPB_Messaging::PostMessage and PPP_Messaging::HandleMessage for more
 // information.
@@ skipping 50 matching lines @@
   // We pass all non-postMessage calls through to the passthrough_object_.
   // This way, a plugin can use PPB_Class or PPP_Class_Deprecated and also
   // postMessage.  This is necessary to support backwards-compatibility, and
   // also trusted plugins for which we will continue to support synchronous
   // scripting.
   NPObject* passthrough_object_;
 
   // The NPObject we use to expose postMessage to JavaScript.
   MessageChannelNPObject* np_object_;
 
-  // An NPVariant referring to the JavaScript function we use to send a message
-  // to a JavaScript target.
-  NPVariant onmessage_invoker_;
-
-  // Evaluates the JavaScript code for onmessage_invoker_ and makes
-  // it a callable NPVariant for that function.  Returns true on success, false
-  // otherwise.
-  bool EvaluateOnMessageInvoker();
-
   // Post a message to the onmessage handler for this channel's instance
   // synchronously.  This is used by PostMessageToJavaScript.
-  void PostMessageToJavaScriptImpl(PP_Var message_data);
+  void PostMessageToJavaScriptImpl(
+      const WebKit::WebSerializedScriptValue& message_data);
   // Post a message to the PPP_Instance HandleMessage function for this
   // channel's instance.  This is used by PostMessageToNative.
   void PostMessageToNativeImpl(PP_Var message_data);
 
   // This is used to ensure pending tasks will not fire after this object is
   // destroyed.
   base::WeakPtrFactory<MessageChannel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MessageChannel);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_MESSAGE_CHANNEL_H_