Deleted OS_WIN and all Windows specific files from base.

base/threading/thread_local_storage_unittest.cc

Index: base/threading/thread_local_storage_unittest.cc
diff --git a/base/threading/thread_local_storage_unittest.cc b/base/threading/thread_local_storage_unittest.cc
index bcc1d1b9db5250a566b9c77cbb82262883390255..b10cac1082064a551975180d7a1c1e5942983493 100644
--- a/base/threading/thread_local_storage_unittest.cc
+++ b/base/threading/thread_local_storage_unittest.cc
@@ -2,21 +2,10 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#if defined(OS_WIN)
-#include <windows.h>
-#include <process.h>
-#endif
-
 #include "base/threading/simple_thread.h"
 #include "base/threading/thread_local_storage.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-#if defined(OS_WIN)
-// Ignore warnings about ptr->int conversions that we use when
-// storing ints into ThreadLocalStorage.
-#pragma warning(disable : 4311 4312)
-#endif
-
 namespace base {
 
 namespace {
@@ -79,8 +68,7 @@ TEST(ThreadLocalStorageTest, Basics) {
   EXPECT_EQ(value, 123);
 }
 
-#if defined(THREAD_SANITIZER) || \
-    (defined(OS_WIN) && defined(ARCH_CPU_X86_64) && !defined(NDEBUG))
+#if defined(THREAD_SANITIZER)
 // Do not run the test under ThreadSanitizer. Because this test iterates its
 // own TSD destructor for the maximum possible number of times, TSan can't jump
 // in after the last destructor invocation, therefore the destructor remains