Switch MessagePumpForIO to use completion ports on Windows....

net/disk_cache/mapped_file_unittest.cc

 // Copyright (c) 2006-2008 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 "base/file_util.h"
 #include "base/string_util.h"
 #include "net/disk_cache/disk_cache_test_base.h"
 #include "net/disk_cache/disk_cache_test_util.h"
 #include "net/disk_cache/mapped_file.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 77 matching lines @@
   file_util::AppendToPath(&filename, L"a_test");
   scoped_refptr<disk_cache::MappedFile> file(new disk_cache::MappedFile);
   ASSERT_TRUE(CreateCacheTestFile(filename.c_str()));
   ASSERT_TRUE(file->Init(filename, 8192));
 
   FileCallbackTest callback(1);
   g_cache_tests_error = false;
   g_cache_tests_max_id = 0;
   g_cache_tests_received = 0;
 
+  MessageLoopHelper helper;
+
   char buffer1[20];
   char buffer2[20];
   CacheTestFillBuffer(buffer1, sizeof(buffer1), false);
   base::strlcpy(buffer1, "the data", sizeof(buffer1));
   bool completed;
   EXPECT_TRUE(file->Write(buffer1, sizeof(buffer1), 1024 * 1024, &callback,
               &completed));
   int expected = completed ? 0 : 1;
 
   g_cache_tests_max_id = 1;
-  WaitForCallbacks(expected);
+  helper.WaitUntilCacheIoFinished(expected);
 
   EXPECT_TRUE(file->Read(buffer2, sizeof(buffer2), 1024 * 1024, &callback,
               &completed));
   if (!completed)
     expected++;
 
-  WaitForCallbacks(expected);
+  helper.WaitUntilCacheIoFinished(expected);
 
   EXPECT_EQ(expected, g_cache_tests_received);
   EXPECT_FALSE(g_cache_tests_error);
   EXPECT_STREQ(buffer1, buffer2);
 }