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/Layer.cpp b/libs/surfaceflinger/Layer.cpp
index 8c0b40d..d1142cc 100644
--- a/libs/surfaceflinger/Layer.cpp
+++ b/libs/surfaceflinger/Layer.cpp
@@ -217,7 +217,7 @@
     drawWithOpenGL(clip, mTextures[index]);
 }
 
-sp<SurfaceBuffer> Layer::peekBuffer(int usage)
+sp<SurfaceBuffer> Layer::peekBuffer()
 {
     /*
      * This is called from the client's Surface::lock(), after it locked
@@ -250,7 +250,7 @@
     }
     
     LayerBitmap& layerBitmap(mBuffers[backBufferIndex]);
-    sp<SurfaceBuffer> buffer = layerBitmap.allocate(usage);
+    sp<SurfaceBuffer> buffer = layerBitmap.allocate();
     
     LOGD_IF(DEBUG_RESIZE,
             "Layer::getBuffer(this=%p), index=%d, (%d,%d), (%d,%d)",
@@ -649,12 +649,12 @@
 {
 }
 
-sp<SurfaceBuffer> Layer::SurfaceLayer::getBuffer(int usage)
+sp<SurfaceBuffer> Layer::SurfaceLayer::getBuffer()
 {
     sp<SurfaceBuffer> buffer = 0;
     sp<Layer> owner(getOwner());
     if (owner != 0) {
-        buffer = owner->peekBuffer(usage);
+        buffer = owner->peekBuffer();
     }
     return buffer;
 }