Pepper: Move FileRef to the "new" resource proxy.

ppapi/shared_impl/url_request_info_data.h

Index: ppapi/shared_impl/url_request_info_data.h
diff --git a/ppapi/shared_impl/url_request_info_data.h b/ppapi/shared_impl/url_request_info_data.h
index 501251a5388f1c098640066fd9233e9e1d74a20b..dd9aab9d49f97e0cd442eb73b8d19bba892ba6a5 100644
--- a/ppapi/shared_impl/url_request_info_data.h
+++ b/ppapi/shared_impl/url_request_info_data.h
@@ -9,10 +9,12 @@
 #include <vector>
 
 #include "base/memory/ref_counted.h"
+#include "ppapi/c/pp_resource.h"
 #include "ppapi/c/pp_stdint.h"
 #include "ppapi/c/pp_time.h"
-#include "ppapi/shared_impl/host_resource.h"
+#include "ppapi/shared_impl/ppapi_globals.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
+#include "ppapi/shared_impl/resource_tracker.h"
 
 namespace ppapi {
 
@@ -32,19 +34,10 @@ struct PPAPI_SHARED_EXPORT URLRequestInfoData {
 
     std::string data;
 
-    // Is is_file is set, these variables are set. Note that the resource
-    // may still be NULL in some cases, such as deserialization errors.
-    //
-    // This is a bit tricky. In the plugin side of the proxy, both the file ref
-    // and the file_ref_host_resource will be set and valid. The scoped_refptr
-    // ensures that the resource is alive for as long as the BodyItem is.
-    //
-    // When we deserialize this in the renderer, only the
-    // file_ref_host_resource's are serialized over IPC. The file_refs won't be
-    // valid until the host resources are converted to Resource pointers in the
-    // PPB_URLRequestInfo_Impl.
-    scoped_refptr<Resource> file_ref;
-    HostResource file_ref_host_resource;
+    // file_ref_resource (which exists for refcounting purposes) only exists on
+    // the plugin-side.
+    scoped_refptr<Resource> file_ref_resource;
+    PP_Resource file_ref_pp_resource;

[yzshen1, 2013/08/09 18:38:30]

nit: please add ref that the struct doesn't hold ref to it.
and I think it is good to say that some fields are only valid when |is_file| is
set.

 
     int64_t start_offset;
     int64_t number_of_bytes;