replace COMPILE_ASSERT with static_assert in sync/

sync/internal_api/public/base/node_ordinal.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 SYNC_INTERNAL_API_PUBLIC_BASE_NODE_ORDINAL_H_
 #define SYNC_INTERNAL_API_PUBLIC_BASE_NODE_ORDINAL_H_
 
 #include "base/basictypes.h"
 #include "sync/base/sync_export.h"
 #include "sync/internal_api/public/base/ordinal.h"
 
 namespace syncer {
 
 // A NodeOrdinal is an Ordinal whose internal value comes from the
 // ordinal_in_parent field of SyncEntity (see sync.proto).  It uses
 // the entire uint8 range for backwards compatibility with the old
 // int64-based positioning.
 
 struct NodeOrdinalTraits {
   static const uint8 kZeroDigit = 0;
   static const uint8 kMaxDigit = kuint8max;
   static const size_t kMinLength = 8;
 };
 
 typedef Ordinal<NodeOrdinalTraits> NodeOrdinal;
 
-COMPILE_ASSERT(static_cast<char>(NodeOrdinal::kZeroDigit) == '\x00',
-               NodeOrdinalHasCorrectZeroDigit);
-COMPILE_ASSERT(static_cast<char>(NodeOrdinal::kOneDigit) == '\x01',
-               NodeOrdinalHasCorrectOneDigit);
-COMPILE_ASSERT(static_cast<char>(NodeOrdinal::kMidDigit) == '\x80',
-               NodeOrdinalHasCorrectMidDigit);
-COMPILE_ASSERT(static_cast<char>(NodeOrdinal::kMaxDigit) == '\xff',
-               NodeOrdinalHasCorrectMaxDigit);
-COMPILE_ASSERT(NodeOrdinal::kMidDigitValue == 128,
-               NodeOrdinalHasCorrectMidDigitValue);
-COMPILE_ASSERT(NodeOrdinal::kMaxDigitValue == 255,
-               NodeOrdinalHasCorrectMaxDigitValue);
-COMPILE_ASSERT(NodeOrdinal::kRadix == 256,
-               NodeOrdinalHasCorrectRadix);
+static_assert(static_cast<char>(NodeOrdinal::kZeroDigit) == '\x00',
+              "NodeOrdinal has incorrect zero digit");
+static_assert(static_cast<char>(NodeOrdinal::kOneDigit) == '\x01',
+              "NodeOrdinal has incorrect one digit");
+static_assert(static_cast<char>(NodeOrdinal::kMidDigit) == '\x80',
+              "NodeOrdinal has incorrect mid digit");
+static_assert(static_cast<char>(NodeOrdinal::kMaxDigit) == '\xff',
+              "NodeOrdinal has incorrect max digit");
+static_assert(NodeOrdinal::kMidDigitValue == 128,
+              "NodeOrdinal has incorrect mid digit value");
+static_assert(NodeOrdinal::kMaxDigitValue == 255,
+              "NodeOrdinal has incorrect max digit value");
+static_assert(NodeOrdinal::kRadix == 256,
+              "NodeOrdinal has incorrect radix");
 
 // Converts an int64 position (usually from the position_in_parent
 // field of SyncEntity) to a NodeOrdinal.  This transformation
 // preserves the ordering relation: a < b under integer ordering if
 // and only if Int64ToNodeOrdinal(a) < Int64ToNodeOrdinal(b).
 SYNC_EXPORT_PRIVATE NodeOrdinal Int64ToNodeOrdinal(int64 x);
 
 // The inverse of Int64ToNodeOrdinal.  This conversion is, in general,
 // lossy: NodeOrdinals can have arbitrary fidelity, while numeric
 // positions contain only 64 bits of information (in fact, this is the
 // reason we've moved away from them).
 SYNC_EXPORT_PRIVATE int64 NodeOrdinalToInt64(const NodeOrdinal& ordinal);
 
 }  // namespace syncer
 
 #endif  // SYNC_INTERNAL_API_PUBLIC_BASE_NODE_ORDINAL_H_