Have VirtualDisplays send SF resize messages when resizing

Change-Id: I76d15b22099a659450ec875836c9bf2b6584838f
diff --git a/include/gui/SurfaceComposerClient.h b/include/gui/SurfaceComposerClient.h
index 65313df..c73ef70 100644
--- a/include/gui/SurfaceComposerClient.h
+++ b/include/gui/SurfaceComposerClient.h
@@ -146,6 +146,7 @@
             const sp<IGraphicBufferProducer>& bufferProducer);
     static void setDisplayLayerStack(const sp<IBinder>& token,
             uint32_t layerStack);
+    static void setDisplaySize(const sp<IBinder>& token, uint32_t width, uint32_t height);
 
     /* setDisplayProjection() defines the projection of layer stacks
      * to a given display.