Move Renderer-side NPObject owner tracking to JavaBridgeChannel.

content/renderer/java/java_bridge_dispatcher.h

Index: content/renderer/java/java_bridge_dispatcher.h
diff --git a/content/renderer/java/java_bridge_dispatcher.h b/content/renderer/java/java_bridge_dispatcher.h
index 4cb34b51bb7a554012996960da5ac4f6c1acaa65..29a10374590e26ea7f4078be226c06616d36c1c6 100644
--- a/content/renderer/java/java_bridge_dispatcher.h
+++ b/content/renderer/java/java_bridge_dispatcher.h
@@ -8,13 +8,10 @@
 #include <map>
 
 #include "base/memory/ref_counted.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "ipc/ipc_channel_handle.h"
 #include "third_party/npapi/bindings/npruntime.h"
 
-struct _NPP;
-
 namespace content {
 class JavaBridgeChannel;
 struct NPVariant_Param;
@@ -47,7 +44,6 @@ class JavaBridgeDispatcher : public RenderViewObserver {
   typedef std::map<string16, NPVariant> ObjectMap;
   ObjectMap objects_;
   scoped_refptr<JavaBridgeChannel> channel_;
-  scoped_ptr<struct _NPP> owner_id_;
 };
 
 }  // namespace content