Optionally have MessagePort pass data as base::Value, part 1.

content/child/webmessageportchannel_impl.h

Index: content/child/webmessageportchannel_impl.h
diff --git a/content/child/webmessageportchannel_impl.h b/content/child/webmessageportchannel_impl.h
index f3e6714431ef9f45ee9c5ebaa1accb681d84a57f..cb87aff67a35d7a233492a3d6e3b8c2ee8c7e02d 100644
--- a/content/child/webmessageportchannel_impl.h
+++ b/content/child/webmessageportchannel_impl.h
@@ -10,13 +10,16 @@
 
 #include "base/basictypes.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/strings/string16.h"
 #include "base/synchronization/lock.h"
+#include "content/public/common/message_port_types.h"
 #include "ipc/ipc_listener.h"
 #include "third_party/WebKit/public/platform/WebMessagePortChannel.h"
 
 namespace base {
 class SingleThreadTaskRunner;
+class Value;
 }
 
 namespace content {
@@ -68,13 +71,13 @@ class WebMessagePortChannelImpl
   void Init();
   void Entangle(scoped_refptr<WebMessagePortChannelImpl> channel);
   void Send(IPC::Message* message);
-  void PostMessage(const base::string16& message,
+  void PostMessage(const MessagePortMessage& message,
                    blink::WebMessagePortChannelArray* channels);
 
   // IPC::Listener implementation.
   bool OnMessageReceived(const IPC::Message& message) override;
 
-  void OnMessage(const base::string16& message,
+  void OnMessage(const MessagePortMessage& message,
                  const std::vector<int>& sent_message_port_ids,
                  const std::vector<int>& new_routing_ids);
   void OnMessagesQueued();
@@ -83,7 +86,7 @@ class WebMessagePortChannelImpl
     Message();
     ~Message();
 
-    base::string16 message;
+    MessagePortMessage message;
     std::vector<WebMessagePortChannelImpl*> ports;
   };
 
@@ -95,6 +98,10 @@ class WebMessagePortChannelImpl
 
   int route_id_;  // The routing id for this object.
   int message_port_id_;  // A globally unique identifier for this message port.
+  // Flag to indicate if messages should be sent to the browser process as
+  // base::Value instances as opposed to being serialized using the default
+  // blink::WebSerializedScriptValue.
+  bool send_messages_as_values_;
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(WebMessagePortChannelImpl);