Switch to standard integer types in ppapi/.

BUG=138542
[email protected]
NOPRESUBMIT=true

Review URL: https://codereview.chromium.org/1548813002

Cr-Commit-Position: refs/heads/master@{#366718}
diff --git a/ppapi/proxy/mock_resource.h b/ppapi/proxy/mock_resource.h
index 768929d..ed894bda 100644
--- a/ppapi/proxy/mock_resource.h
+++ b/ppapi/proxy/mock_resource.h
@@ -5,6 +5,7 @@
 #ifndef PPAPI_PROXY_MOCK_RESOURCE_H_
 #define PPAPI_PROXY_MOCK_RESOURCE_H_
 
+#include "base/macros.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/shared_impl/resource.h"