system_wrappers: Fix include header guards.

webrtc/system_wrappers/include/rw_lock_wrapper.h

Index: webrtc/system_wrappers/include/rw_lock_wrapper.h
diff --git a/webrtc/system_wrappers/include/rw_lock_wrapper.h b/webrtc/system_wrappers/include/rw_lock_wrapper.h
index dbe6d6c7c005fabd057cf2de4df50cc302ddf9c4..751b6a1df59a6f5431db09c8525e1e52edd39cbd 100644
--- a/webrtc/system_wrappers/include/rw_lock_wrapper.h
+++ b/webrtc/system_wrappers/include/rw_lock_wrapper.h
@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef WEBRTC_SYSTEM_WRAPPERS_INTERFACE_RW_LOCK_WRAPPER_H_
-#define WEBRTC_SYSTEM_WRAPPERS_INTERFACE_RW_LOCK_WRAPPER_H_
+#ifndef WEBRTC_SYSTEM_WRAPPERS_INCLUDE_RW_LOCK_WRAPPER_H_
+#define WEBRTC_SYSTEM_WRAPPERS_INCLUDE_RW_LOCK_WRAPPER_H_
 
 #include "webrtc/base/thread_annotations.h"
 
@@ -65,4 +65,4 @@ class SCOPED_LOCKABLE WriteLockScoped {
 
 }  // namespace webrtc
 
-#endif  // WEBRTC_SYSTEM_WRAPPERS_INTERFACE_RW_LOCK_WRAPPER_H_
+#endif  // WEBRTC_SYSTEM_WRAPPERS_INCLUDE_RW_LOCK_WRAPPER_H_