Deleted OS_WIN and all Windows specific files from base.

base/trace_event/winheap_dump_provider_win_unittest.cc

-// Copyright 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 "base/trace_event/winheap_dump_provider_win.h"
-
-#include <windows.h>
-
-#include "base/trace_event/memory_dump_session_state.h"
-#include "base/trace_event/process_memory_dump.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace base {
-namespace trace_event {
-
-TEST(WinHeapDumpProviderTest, OnMemoryDump) {
-  ProcessMemoryDump pmd(make_scoped_refptr(new MemoryDumpSessionState()));
-
-  WinHeapDumpProvider* winheap_dump_provider =
-      WinHeapDumpProvider::GetInstance();
-  ASSERT_NE(static_cast<WinHeapDumpProvider*>(nullptr), winheap_dump_provider);
-
-  ASSERT_NO_FATAL_FAILURE(winheap_dump_provider->OnMemoryDump(&pmd));
-}
-
-}  // namespace trace_event
-}  // namespace base