Deleted OS_WIN and all Windows specific files from base.

base/threading/thread_local_storage.h

Index: base/threading/thread_local_storage.h
diff --git a/base/threading/thread_local_storage.h b/base/threading/thread_local_storage.h
index 50f88685a57ba43c1b8c3d6ecd41c4b98cc2449e..eea6a0a8258d6625b77f5030113dd59bc67abed1 100644
--- a/base/threading/thread_local_storage.h
+++ b/base/threading/thread_local_storage.h
@@ -8,9 +8,7 @@
 #include "base/base_export.h"
 #include "base/basictypes.h"
 
-#if defined(OS_WIN)
-#include <windows.h>
-#elif defined(OS_POSIX)
+#if defined(OS_POSIX)
 #include <pthread.h>
 #endif
 
@@ -24,10 +22,7 @@ namespace internal {
 class BASE_EXPORT PlatformThreadLocalStorage {
  public:
 
-#if defined(OS_WIN)
-  typedef unsigned long TLSKey;
-  enum { TLS_KEY_OUT_OF_INDEXES = TLS_OUT_OF_INDEXES };
-#elif defined(OS_POSIX)
+#if defined(OS_POSIX)
   typedef pthread_key_t TLSKey;
   // The following is a "reserved key" which is used in our generic Chromium
   // ThreadLocalStorage implementation.  We expect that an OS will not return
@@ -59,11 +54,7 @@ class BASE_EXPORT PlatformThreadLocalStorage {
   // Destructors may end up being called multiple times on a terminating
   // thread, as other destructors may re-set slots that were previously
   // destroyed.
-#if defined(OS_WIN)
-  // Since Windows which doesn't support TLS destructor, the implementation
-  // should use GetTLSValue() to retrieve the value of TLS slot.
-  static void OnThreadExit();
-#elif defined(OS_POSIX)
+#if defined(OS_POSIX)
   // |Value| is the data stored in TLS slot, The implementation can't use
   // GetTLSValue() to retrieve the value of slot as it has already been reset
   // in Posix.