Update attributes to match gclibc's ansidecl.h

webrtc/base/common.h

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 160 matching lines @@
 
 #endif  // !ENABLE_DEBUG
 
 #define COMPILE_TIME_ASSERT(expr)       char CTA_UNIQUE_NAME[expr]
 #define CTA_UNIQUE_NAME                 CTA_MAKE_NAME(__LINE__)
 #define CTA_MAKE_NAME(line)             CTA_MAKE_NAME2(line)
 #define CTA_MAKE_NAME2(line)            constraint_ ## line
 
 // Forces compiler to inline, even against its better judgement. Use wisely.
 #if defined(__GNUC__)
-#define FORCE_INLINE __attribute__((always_inline))
+#define FORCE_INLINE __attribute__ ((__always_inline__))
 #elif defined(WEBRTC_WIN)
 #define FORCE_INLINE __forceinline
 #else
 #define FORCE_INLINE
 #endif
 
 // Annotate a function indicating the caller must examine the return value.
 // Use like:
 //   int foo() WARN_UNUSED_RESULT;
 // To explicitly ignore a result, see |ignore_result()| in <base/basictypes.h>.
 // TODO(ajm): Hack to avoid multiple definitions until the base/ of webrtc and
 // libjingle are merged.
 #if !defined(WARN_UNUSED_RESULT)
 #if defined(__GNUC__) || defined(__clang__)
-#define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
+#define WARN_UNUSED_RESULT __attribute__ ((__warn_unused_result__))
 #else
 #define WARN_UNUSED_RESULT
 #endif
 #endif  // WARN_UNUSED_RESULT
 
 #endif  // WEBRTC_BASE_COMMON_H_    // NOLINT