remoting/host: Fix cpplint warning of header guards.

remoting/host/wts_console_observer_win.h

Index: remoting/host/wts_console_observer_win.h
diff --git a/remoting/host/wts_console_observer_win.h b/remoting/host/wts_console_observer_win.h
index 7f4d8475f2f56ed7b0581c526b2d277321236227..212ccd64c3c5b07a59bb4396c9cf4c6e9a34111b 100644
--- a/remoting/host/wts_console_observer_win.h
+++ b/remoting/host/wts_console_observer_win.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef REMOTING_HOST_wts_console_observer_win_H_
-#define REMOTING_HOST_wts_console_observer_win_H_
+#ifndef REMOTING_HOST_WTS_CONSOLE_OBSERVER_WIN_H_
+#define REMOTING_HOST_WTS_CONSOLE_OBSERVER_WIN_H_
 
 #include <windows.h>
 
@@ -31,4 +31,4 @@ class WtsConsoleObserver {
 
 }  // namespace remoting
 
-#endif  // REMOTING_HOST_wts_console_observer_win_H_
+#endif  // REMOTING_HOST_WTS_CONSOLE_OBSERVER_WIN_H_