PPAPI: Add new PPB_FileRef.MakeDirectory to support exclusive operation

content/browser/renderer_host/pepper/pepper_external_file_ref_backend.h

 // Copyright 2013 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 CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_
 
 #include <string>
 
 #include "base/files/file_path.h"
@@ skipping 10 matching lines @@
 // Implementations of FileRef operations for external filesystems.
 class PepperExternalFileRefBackend : public PepperFileRefBackend {
  public:
   PepperExternalFileRefBackend(ppapi::host::PpapiHost* host,
                                int render_process_id,
                                const base::FilePath& path);
   virtual ~PepperExternalFileRefBackend();
 
   // PepperFileRefBackend overrides.
   virtual int32_t MakeDirectory(ppapi::host::ReplyMessageContext context,
+                                bool exclusive,
                                 bool make_ancestors) OVERRIDE;
   virtual int32_t Touch(ppapi::host::ReplyMessageContext context,
                         PP_Time last_accessed_time,
                         PP_Time last_modified_time) OVERRIDE;
   virtual int32_t Delete(ppapi::host::ReplyMessageContext context) OVERRIDE;
   virtual int32_t Rename(ppapi::host::ReplyMessageContext context,
                          PepperFileRefHost* new_file_ref) OVERRIDE;
   virtual int32_t Query(ppapi::host::ReplyMessageContext context) OVERRIDE;
   virtual int32_t ReadDirectoryEntries(
       ppapi::host::ReplyMessageContext context) OVERRIDE;
@@ skipping 26 matching lines @@
   scoped_refptr<base::TaskRunner> task_runner_;
 
   base::WeakPtrFactory<PepperExternalFileRefBackend> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperExternalFileRefBackend);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_EXTERNAL_FILE_REF_BACKEND_H_