Sang's initial CL for moving the file interface out of dev.

ppapi/cpp/file_io.h

Index: ppapi/cpp/file_io.h
===================================================================
--- ppapi/cpp/file_io.h	(revision 0)
+++ ppapi/cpp/file_io.h	(revision 0)
@@ -0,0 +1,52 @@
+// Copyright (c) 2011 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_CPP_FILE_IO_H_
+#define PPAPI_CPP_FILE_IO_H_
+
+#include "ppapi/c/pp_time.h"
+#include "ppapi/cpp/resource.h"
+
+struct PP_FileInfo;
+
+namespace pp {
+
+class CompletionCallback;
+class FileRef;
+class Instance;
+
+class FileIO: public Resource {
+ public:
+  // Constructs an is_null resource.
+  FileIO();
+
+  FileIO(Instance* instance);
+  FileIO(const FileIO& other);
+
+    // PPB_FileIO methods:
+  int32_t Open(const FileRef& file_ref,
+               int32_t open_flags,
+               const CompletionCallback& cc);
+  int32_t Query(PP_FileInfo* result_buf,
+                const CompletionCallback& cc);
+  int32_t Touch(PP_Time last_access_time,
+                PP_Time last_modified_time,
+                const CompletionCallback& cc);
+  int32_t Read(int64_t offset,
+               char* buffer,
+               int32_t bytes_to_read,
+               const CompletionCallback& cc);
+  int32_t Write(int64_t offset,
+                const char* buffer,
+                int32_t bytes_to_write,
+                const CompletionCallback& cc);
+  int32_t SetLength(int64_t length,
+                    const CompletionCallback& cc);
+  int32_t Flush(const CompletionCallback& cc);
+  void Close();
+};
+
+}  // namespace pp
+
+#endif  // PPAPI_CPP_FILE_IO_H_