Switch to standard integer types in components/, part 1 of 4.

components/browser_watcher/endsession_watcher_window_win_unittest.cc

 // Copyright (c) 2015 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 "components/browser_watcher/endsession_watcher_window_win.h"
 
 #include <windows.h>
+#include <stddef.h>
 #include <vector>
 
 #include "base/bind.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_watcher {
 
 namespace {
 
 class EndSessionWatcherWindowTest : public testing::Test {
@@ skipping 40 matching lines @@
   EXPECT_EQ(2u, num_callbacks_);
   EXPECT_EQ(static_cast<UINT>(WM_ENDSESSION), last_message_);
   EXPECT_EQ(0xCAFE, last_lparam_);
 
   // Verify that other messages don't pass through.
   ::SendMessage(watcher_window.window(), WM_CLOSE, TRUE, 0xCAFE);
   EXPECT_EQ(2u, num_callbacks_);
 }
 
 }  // namespace browser_watcher