New IPC definitions, only applied to async ROUTED and CONTROL messages.

chrome/common/common_param_traits.h

Index: chrome/common/common_param_traits.h
diff --git a/chrome/common/common_param_traits.h b/chrome/common/common_param_traits.h
index 0ca6bed17d2d656ccd5910aa5b57db1358f48b10..f39c066f171bc7a7b02702d0297bcee878c3ccc1 100644
--- a/chrome/common/common_param_traits.h
+++ b/chrome/common/common_param_traits.h
@@ -34,6 +34,7 @@ class DictionaryValue;
 class ListValue;
 struct ThumbnailScore;
 class URLRequestStatus;
+class WebCursor;
 
 namespace gfx {
 class Point;
@@ -210,7 +211,7 @@ struct ParamTraits<WebCursor> {
   static void Write(Message* m, const param_type& p) {
     p.Serialize(m);
   }
-  static bool Read(const Message* m, void** iter, param_type* r) {
+  static bool Read(const Message* m, void** iter, param_type* r)  {
     return r->Deserialize(m, iter);
   }
   static void Log(const param_type& p, std::wstring* l) {