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..3b50e65554cb6de1cd948b511e25b4e5b62402b2 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 {
 
@@ -26,6 +28,7 @@ struct PPAPI_SHARED_EXPORT URLRequestInfoData {
              int64_t start_offset,
              int64_t number_of_bytes,
              PP_Time expected_last_modified_time);
+    ~BodyItem();
 
     // Set if the input is a file, false means the |data| is valid.
     bool is_file;
@@ -35,16 +38,9 @@ struct PPAPI_SHARED_EXPORT URLRequestInfoData {
     // 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;
+    // When a BodyItem is created, a ref is taken on file_ref_pp_resource. That
+    // ref is releated when BodyItem is destroyed.
+    PP_Resource file_ref_pp_resource;
 
     int64_t start_offset;
     int64_t number_of_bytes;