replace COMPILE_ASSERT with static_assert in cc/

cc/base/util.h

 // Copyright 2012 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 CC_BASE_UTIL_H_
 #define CC_BASE_UTIL_H_
 
 #include <limits>
 
 #include "base/basictypes.h"
 
 namespace cc {
 
 template <typename T> T RoundUp(T n, T mul) {
-  COMPILE_ASSERT(std::numeric_limits<T>::is_integer, type_must_be_integral);
+  static_assert(std::numeric_limits<T>::is_integer,
+                "T must be an integer type");
   return (n > 0) ? ((n + mul - 1) / mul) * mul
                  : (n / mul) * mul;
 }
 
 template <typename T> T RoundDown(T n, T mul) {
-  COMPILE_ASSERT(std::numeric_limits<T>::is_integer, type_must_be_integral);
+  static_assert(std::numeric_limits<T>::is_integer,
+                "T must be an integer type");
   return (n > 0) ? (n / mul) * mul
                  : (n == 0) ? 0
                  : ((n - mul + 1) / mul) * mul;
 }
 
 }  // namespace cc
 
 #endif  // CC_BASE_UTIL_H_