Switch to standard integer types in remoting/.

BUG=138542
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Review URL: https://codereview.chromium.org/1542203002

Cr-Commit-Position: refs/heads/master@{#366684}
diff --git a/remoting/client/client_context.h b/remoting/client/client_context.h
index 56ae02e..49f05378 100644
--- a/remoting/client/client_context.h
+++ b/remoting/client/client_context.h
@@ -7,6 +7,7 @@
 
 #include <string>
 
+#include "base/macros.h"
 #include "base/threading/thread.h"
 
 namespace base {