Extensions: Send the tab id to platform apps.

chrome/renderer/extensions/send_request_natives.cc

Index: chrome/renderer/extensions/send_request_natives.cc
===================================================================
--- chrome/renderer/extensions/send_request_natives.cc	(revision 246091)
+++ chrome/renderer/extensions/send_request_natives.cc	(working copy)
@@ -43,6 +43,7 @@
   bool has_callback = args[3]->BooleanValue();
   bool for_io_thread = args[4]->BooleanValue();
   bool preserve_null_in_objects = args[5]->BooleanValue();
+  int sender_tab_id = args[6]->Int32Value();
 
   scoped_ptr<V8ValueConverter> converter(V8ValueConverter::create());
 
@@ -61,7 +62,7 @@
   }
 
   request_sender_->StartRequest(
-      context(), name, request_id, has_callback, for_io_thread,
+      context(), name, request_id, has_callback, for_io_thread, sender_tab_id,
       static_cast<base::ListValue*>(value_args.get()));
 }