Clean up Fence a little.

Test: Cleanup patch only. Fences still work.

Change-Id: I65e5cdf5e3c067bc475c085ab6d3577d9753231c
diff --git a/include/gui/BufferQueueConsumer.h b/include/gui/BufferQueueConsumer.h
index e2bafec..da574ec 100644
--- a/include/gui/BufferQueueConsumer.h
+++ b/include/gui/BufferQueueConsumer.h
@@ -22,6 +22,7 @@
 
 #include <gui/BufferQueueDefs.h>
 #include <gui/IGraphicBufferConsumer.h>
+#include <utils/String8.h>
 
 namespace android {