Move hash_pair.h from cc/base into base/.

cc/base/hash_pair_unittest.cc

-// 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.
-
-#include "cc/base/hash_pair.h"
-
-#include "base/basictypes.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace {
-
-class HashPairTest : public testing::Test {
-};
-
-#define INSERT_PAIR_TEST(Type, value1, value2) \
-  { \
-    Type pair(value1, value2); \
-    base::hash_map<Type, int> map; \
-    map[pair] = 1; \
-  }
-
-// Verify that a hash_map can be constructed for pairs of integers of various
-// sizes.
-TEST_F(HashPairTest, IntegerPairs) {
-  typedef std::pair<int16, int16> Int16Int16Pair;
-  typedef std::pair<int16, int32> Int16Int32Pair;
-  typedef std::pair<int16, int64> Int16Int64Pair;
-
-  INSERT_PAIR_TEST(Int16Int16Pair, 4, 6);
-  INSERT_PAIR_TEST(Int16Int32Pair, 9, (1 << 29) + 378128932);
-  INSERT_PAIR_TEST(Int16Int64Pair, 10,
-                   (GG_INT64_C(1) << 60) + GG_INT64_C(78931732321));
-
-  typedef std::pair<int32, int16> Int32Int16Pair;
-  typedef std::pair<int32, int32> Int32Int32Pair;
-  typedef std::pair<int32, int64> Int32Int64Pair;
-
-  INSERT_PAIR_TEST(Int32Int16Pair, 4, 6);
-  INSERT_PAIR_TEST(Int32Int32Pair, 9, (1 << 29) + 378128932);
-  INSERT_PAIR_TEST(Int32Int64Pair, 10,
-                   (GG_INT64_C(1) << 60) + GG_INT64_C(78931732321));
-
-  typedef std::pair<int64, int16> Int64Int16Pair;
-  typedef std::pair<int64, int32> Int64Int32Pair;
-  typedef std::pair<int64, int64> Int64Int64Pair;
-
-  INSERT_PAIR_TEST(Int64Int16Pair, 4, 6);
-  INSERT_PAIR_TEST(Int64Int32Pair, 9, (1 << 29) + 378128932);
-  INSERT_PAIR_TEST(Int64Int64Pair, 10,
-                   (GG_INT64_C(1) << 60) + GG_INT64_C(78931732321));
-}
-
-}  // namespace