Remove webkit::ppapi::Resource.

webkit/plugins/ppapi/ppb_flash_file_impl.cc

Index: webkit/plugins/ppapi/ppb_flash_file_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_flash_file_impl.cc b/webkit/plugins/ppapi/ppb_flash_file_impl.cc
index 9a1ac5a0e10925f7cbc672e4780b37982a2ba2ec..de8b939a697bc945857fcd574fc9d9e5047aa705 100644
--- a/webkit/plugins/ppapi/ppb_flash_file_impl.cc
+++ b/webkit/plugins/ppapi/ppb_flash_file_impl.cc
@@ -20,6 +20,7 @@
 #include "webkit/plugins/ppapi/plugin_module.h"
 #include "webkit/plugins/ppapi/ppapi_plugin_instance.h"
 #include "webkit/plugins/ppapi/ppb_file_ref_impl.h"
+#include "webkit/plugins/ppapi/resource_helper.h"
 #include "webkit/plugins/ppapi/resource_tracker.h"
 
 #if defined(OS_WIN)
@@ -225,7 +226,7 @@ int32_t OpenFileRefFile(PP_Resource file_ref_id,
     return PP_ERROR_BADRESOURCE;
   PPB_FileRef_Impl* file_ref = static_cast<PPB_FileRef_Impl*>(enter.object());
 
-  PluginInstance* instance = file_ref->instance();
+  PluginInstance* instance = ResourceHelper::GetPluginInstance(file_ref);
   if (!instance)
     return PP_ERROR_FAILED;
 
@@ -245,7 +246,7 @@ int32_t QueryFileRefFile(PP_Resource file_ref_id,
     return PP_ERROR_BADRESOURCE;
   PPB_FileRef_Impl* file_ref = static_cast<PPB_FileRef_Impl*>(enter.object());
 
-  PluginInstance* instance = file_ref->instance();
+  PluginInstance* instance = ResourceHelper::GetPluginInstance(file_ref);
   if (!instance)
     return PP_ERROR_FAILED;