Change ppapi C++ comment style into C.

ppapi/c/dev/pp_file_info_dev.h

Index: ppapi/c/dev/pp_file_info_dev.h
diff --git a/ppapi/c/dev/pp_file_info_dev.h b/ppapi/c/dev/pp_file_info_dev.h
index d38119360a4f687cfc8845322b5fabd9b90d8fa2..dd247fcc2e276be3d0562614a2af3055654208c9 100644
--- a/ppapi/c/dev/pp_file_info_dev.h
+++ b/ppapi/c/dev/pp_file_info_dev.h
@@ -1,7 +1,7 @@
-// Copyright (c) 2010 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.
-
+/* Copyright (c) 2010 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_C_DEV_PP_FILE_INFO_DEV_H_
 #define PPAPI_C_DEV_PP_FILE_INFO_DEV_H_
 
@@ -12,7 +12,7 @@
 typedef enum {
   PP_FILETYPE_REGULAR,
   PP_FILETYPE_DIRECTORY,
-  PP_FILETYPE_OTHER  // A catch-all for unidentified types.
+  PP_FILETYPE_OTHER  /* A catch-all for unidentified types. */
 } PP_FileType_Dev;
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileType_Dev, 4);
 
@@ -24,7 +24,7 @@ typedef enum {
 PP_COMPILE_ASSERT_SIZE_IN_BYTES(PP_FileSystemType_Dev, 4);
 
 struct PP_FileInfo_Dev {
-  int64_t size;  // Measured in bytes
+  int64_t size;  /* Measured in bytes */
   PP_FileType_Dev type;
   PP_FileSystemType_Dev system_type;
   PP_Time creation_time;
@@ -33,4 +33,5 @@ struct PP_FileInfo_Dev {
 };
 PP_COMPILE_ASSERT_STRUCT_SIZE_IN_BYTES(PP_FileInfo_Dev, 40);
 
-#endif  // PPAPI_C_DEV_PP_FILE_INFO_DEV_H_
+#endif  /* PPAPI_C_DEV_PP_FILE_INFO_DEV_H_ */
+