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

ppapi/proxy/flash_drm_resource.h

Index: ppapi/proxy/flash_drm_resource.h
diff --git a/ppapi/proxy/flash_drm_resource.h b/ppapi/proxy/flash_drm_resource.h
index 12c71e8281726eba3331019d787b839b53a76ec7..86090bf3ace2d7740a61dbf54e6fe846b020eaea 100644
--- a/ppapi/proxy/flash_drm_resource.h
+++ b/ppapi/proxy/flash_drm_resource.h
@@ -11,7 +11,7 @@
 #include "ppapi/thunk/ppb_flash_drm_api.h"
 
 namespace ppapi {
-struct PPB_FileRef_CreateInfo;
+struct FileRef_CreateInfo;
 }
 
 namespace ppapi {
@@ -44,7 +44,7 @@ class FlashDRMResource
   void OnPluginMsgGetVoucherFileReply(PP_Resource* dest,
                                       scoped_refptr<TrackedCallback> callback,
                                       const ResourceMessageReplyParams& params,
-                                      const PPB_FileRef_CreateInfo& file_info);
+                                      const FileRef_CreateInfo& file_info);
 
   DISALLOW_COPY_AND_ASSIGN(FlashDRMResource);
 };