replace COMPILE_ASSERT with static_assert in sync/

sync/api/string_ordinal.h

 // Copyright (c) 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 SYNC_API_STRING_ORDINAL_H_
 #define SYNC_API_STRING_ORDINAL_H_
 
 #include "base/basictypes.h"
 #include "sync/internal_api/public/base/ordinal.h"
 
 namespace syncer {
 
 // A StringOrdinal is an Ordinal with range 'a'-'z' for printability
 // of its internal byte string representation.  (Think of
 // StringOrdinal as being short for PrintableStringOrdinal.)  It
 // should be used for data types that want to maintain one or more
 // orderings for nodes.
 //
 // Since StringOrdinals contain only printable characters, it is safe
 // to store as a string in a protobuf.
 
 struct StringOrdinalTraits {
   static const uint8 kZeroDigit = 'a';
   static const uint8 kMaxDigit = 'z';
   static const size_t kMinLength = 1;
 };
 
 typedef Ordinal<StringOrdinalTraits> StringOrdinal;
 
-COMPILE_ASSERT(StringOrdinal::kZeroDigit == 'a',
-               StringOrdinalHasCorrectZeroDigit);
-COMPILE_ASSERT(StringOrdinal::kOneDigit == 'b',
-               StringOrdinalHasCorrectOneDigit);
-COMPILE_ASSERT(StringOrdinal::kMidDigit == 'n',
-               StringOrdinalHasCorrectMidDigit);
-COMPILE_ASSERT(StringOrdinal::kMaxDigit == 'z',
-               StringOrdinalHasCorrectMaxDigit);
-COMPILE_ASSERT(StringOrdinal::kMidDigitValue == 13,
-               StringOrdinalHasCorrectMidDigitValue);
-COMPILE_ASSERT(StringOrdinal::kMaxDigitValue == 25,
-               StringOrdinalHasCorrectMaxDigitValue);
-COMPILE_ASSERT(StringOrdinal::kRadix == 26,
-               StringOrdinalHasCorrectRadix);
+static_assert(StringOrdinal::kZeroDigit == 'a',
+              "StringOrdinal has incorrect zero digit");
+static_assert(StringOrdinal::kOneDigit == 'b',
+              "StringOrdinal has incorrect one digit");
+static_assert(StringOrdinal::kMidDigit == 'n',
+              "StringOrdinal has incorrect mid digit");
+static_assert(StringOrdinal::kMaxDigit == 'z',
+              "StringOrdinal has incorrect max digit");
+static_assert(StringOrdinal::kMidDigitValue == 13,
+              "StringOrdinal has incorrect mid digit value");
+static_assert(StringOrdinal::kMaxDigitValue == 25,
+              "StringOrdinal has incorrect max digit value");
+static_assert(StringOrdinal::kRadix == 26,
+              "StringOrdinal has incorrect radix");
 
 }  // namespace syncer
 
 #endif  // SYNC_API_STRING_ORDINAL_H_