Mojo: Move public C system header files to mojo/public/c/system/.

mojo/public/utility/lib/thread_local.h

 // Copyright 2014 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.
 
 #ifndef MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_
 #define MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_
 
 #ifndef _WIN32
 #include <pthread.h>
 #endif
 
-#include "mojo/public/system/macros.h"
+#include "mojo/public/c/system/macros.h"
 
 namespace mojo {
 namespace internal {
 
 // Helper functions that abstract the cross-platform APIs.
 struct ThreadLocalPlatform {
 #ifdef _WIN32
   typedef unsigned long SlotType;
 #else
   typedef pthread_key_t SlotType;
@@ skipping 29 matching lines @@
   }
 
  private:
   ThreadLocalPlatform::SlotType slot_;
 };
 
 }  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_UTILITY_LIB_THREAD_LOCAL_H_