Revert "SurfaceFlinger will now allocate buffers based on the usage specified by the clients. This allows to allocate the right kind of buffer automatically, without having the user to specify anything."

This reverts commit 8b76a0ac6fbf07254629ed1ea86af014d5abe050.
diff --git a/libs/surfaceflinger/LayerBase.h b/libs/surfaceflinger/LayerBase.h
index 65bf55b..6fb1d1c 100644
--- a/libs/surfaceflinger/LayerBase.h
+++ b/libs/surfaceflinger/LayerBase.h
@@ -335,7 +335,7 @@
         sp<LayerBaseClient> getOwner() const;
 
     private:
-        virtual sp<SurfaceBuffer> getBuffer(int usage);
+        virtual sp<SurfaceBuffer> getBuffer();
         virtual status_t registerBuffers(const ISurface::BufferHeap& buffers); 
         virtual void postBuffer(ssize_t offset);
         virtual void unregisterBuffers();