DO NOT MERGE SurfaceFlinger: Stop using IGBC::BufferItem

Switches all uses of IGraphicBufferConsumer::BufferItem (and
BufferQueue::BufferItem) to the BufferItem in libgui. Depends on
frameworks/native I699ed0a6837076867ca756b28d1ffb2238f7a0d9.

Cherry pick of I187b3a7d05196b6289596afac8fb9a9d4aebff76

Change-Id: I5bc79fb96b6cba6021af64b20890967aa3b7fcbf
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index aefa8fd..0e94f0d 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -18,6 +18,8 @@
 #include "VirtualDisplaySurface.h"
 #include "HWComposer.h"
 
+#include <gui/BufferItem.h>
+
 // ---------------------------------------------------------------------------
 namespace android {
 // ---------------------------------------------------------------------------
@@ -436,7 +438,7 @@
         // Now acquire the buffer from the scratch pool -- should be the same
         // slot and fence as we just queued.
         Mutex::Autolock lock(mMutex);
-        BufferQueue::BufferItem item;
+        BufferItem item;
         result = acquireBufferLocked(&item, 0);
         if (result != NO_ERROR)
             return result;