always pass the BufferQueue explicitely to consumers

Change-Id: I883b0a7b19d8e722f9ab714ba6f49e658b02ca86
diff --git a/include/gui/CpuConsumer.h b/include/gui/CpuConsumer.h
index 3c178ef..5f1e369 100644
--- a/include/gui/CpuConsumer.h
+++ b/include/gui/CpuConsumer.h
@@ -28,6 +28,8 @@
 
 namespace android {
 
+class BufferQueue;
+
 /**
  * CpuConsumer is a BufferQueue consumer endpoint that allows direct CPU
  * access to the underlying gralloc buffers provided by BufferQueue. Multiple
@@ -64,7 +66,8 @@
 
     // Create a new CPU consumer. The maxLockedBuffers parameter specifies
     // how many buffers can be locked for user access at the same time.
-    CpuConsumer(uint32_t maxLockedBuffers, bool synchronousMode = true);
+    CpuConsumer(const sp<BufferQueue>& bq,
+            uint32_t maxLockedBuffers, bool synchronousMode = true);
 
     virtual ~CpuConsumer();