Drop NaCl dependencies on platforms where disable_nacl=1.

Review URL: https://codereview.chromium.org/321423002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283505 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/common/all_messages.h b/chrome/common/all_messages.h
index 961ec0e..908711c 100644
--- a/chrome/common/all_messages.h
+++ b/chrome/common/all_messages.h
@@ -14,4 +14,7 @@
 #endif
 
 #include "chrome/common/common_message_generator.h"
+
+#if !defined(DISABLE_NACL)
 #include "components/nacl/common/nacl_messages.h"
+#endif