Include what we use.

Test: mma
Bug: None
Change-Id: I9458aedad9a84f1660d3a2b08717b111dc8e3b74
Exempt-From-Owner-Approval: trivial cleanup
diff --git a/libs/hwui/ProfileDataContainer.cpp b/libs/hwui/ProfileDataContainer.cpp
index cbf3eb3..9db0ef1 100644
--- a/libs/hwui/ProfileDataContainer.cpp
+++ b/libs/hwui/ProfileDataContainer.cpp
@@ -19,6 +19,7 @@
 #include <log/log.h>
 #include <cutils/ashmem.h>
 
+#include <errno.h>
 #include <sys/mman.h>
 
 namespace android {
@@ -75,4 +76,4 @@
 }
 
 } /* namespace uirenderer */
-} /* namespace android */
\ No newline at end of file
+} /* namespace android */