Add a simple compositor for Sky

sky/compositor/layer_host_client.cc

Index: sky/compositor/layer_host_client.cc
diff --git a/sky/engine/core/css/Rect.cpp b/sky/compositor/layer_host_client.cc
similarity index 58%
copy from sky/engine/core/css/Rect.cpp
copy to sky/compositor/layer_host_client.cc
index 18eafa2b81e4fca9377a0963553220b3345dc73b..13a25b028248bf8b47df201f3dab57aebd359ed1 100644
--- a/sky/engine/core/css/Rect.cpp
+++ b/sky/compositor/layer_host_client.cc
@@ -2,11 +2,11 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "config.h"
-#include "core/css/Rect.h"
+#include "sky/compositor/layer_host_client.h"
 
-namespace blink {
-
-DEFINE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(RectBase)
+namespace sky {
 
+LayerHostClient::~LayerHostClient() {
 }
+
+}  // namespace sky