Move hash.h/cc from net/disk_cache to base.

net/disk_cache/disk_cache_perftest.cc

 // Copyright (c) 2011 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 <string>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
+#include "base/hash.h"
 #include "base/perftimer.h"
 #include "base/string_util.h"
 #include "base/threading/thread.h"
 #include "base/test/test_file_util.h"
 #include "base/timer.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "net/disk_cache/block_files.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/disk_cache/disk_cache_test_base.h"
 #include "net/disk_cache/disk_cache_test_util.h"
-#include "net/disk_cache/hash.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 
 using base::Time;
 
 namespace {
 
 struct TestEntry {
   std::string key;
   int data_len;
@@ skipping 111 matching lines @@
 
 }  // namespace
 
 TEST_F(DiskCacheTest, Hash) {
   int seed = static_cast<int>(Time::Now().ToInternalValue());
   srand(seed);
 
   PerfTimeLogger timer("Hash disk cache keys");
   for (int i = 0; i < 300000; i++) {
     std::string key = GenerateKey(true);
-    disk_cache::Hash(key);
+    base::Hash(key);
   }
   timer.Done();
 }
 
 TEST_F(DiskCacheTest, CacheBackendPerformance) {
   base::Thread cache_thread("CacheThread");
   ASSERT_TRUE(cache_thread.StartWithOptions(
                   base::Thread::Options(MessageLoop::TYPE_IO, 0)));
 
   ASSERT_TRUE(CleanupCacheDir());
@@ skipping 75 matching lines @@
 
     files.DeleteBlock(address[entry], false);
     EXPECT_TRUE(files.CreateBlock(disk_cache::RANKINGS, BlockSize(),
                                   &address[entry]));
   }
 
   timer2.Done();
   MessageLoop::current()->RunAllPending();
   delete[] address;
 }