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

ppapi/shared_impl/url_request_info_data.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_SHARED_IMPL_URL_REQUEST_INFO_DATA_H_
 #define PPAPI_SHARED_IMPL_URL_REQUEST_INFO_DATA_H_
 
 #include <string>
 #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 {
 
 class Resource;
 
 struct PPAPI_SHARED_EXPORT URLRequestInfoData {
   struct PPAPI_SHARED_EXPORT BodyItem {
     BodyItem();
     explicit BodyItem(const std::string& data);
     BodyItem(Resource* file_ref,
              int64_t start_offset,
              int64_t number_of_bytes,
              PP_Time expected_last_modified_time);
 
     // Set if the input is a file, false means the |data| is valid.
     bool is_file;
 
     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;
     PP_Time expected_last_modified_time;
 
     // If you add more stuff here, be sure to modify the serialization rules in
     // ppapi_messages.h
   };
 
   URLRequestInfoData();
@@ skipping 30 matching lines @@
 
   std::vector<BodyItem> body;
 
   // If you add more stuff here, be sure to modify the serialization rules in
   // ppapi_messages.h
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_URL_REQUEST_INFO_DATA_H_