Delete most of rendering/compositing.

sky/engine/core/rendering/RenderObject.h

Index: sky/engine/core/rendering/RenderObject.h
diff --git a/sky/engine/core/rendering/RenderObject.h b/sky/engine/core/rendering/RenderObject.h
index d5a9eec7e095cc6d3fee480eb2e00495a1584b83..0082cf4d2ba1df782aa9526929ee044f0ffeca56 100644
--- a/sky/engine/core/rendering/RenderObject.h
+++ b/sky/engine/core/rendering/RenderObject.h
@@ -39,7 +39,6 @@
 #include "sky/engine/core/rendering/ScrollAlignment.h"
 #include "sky/engine/core/rendering/SubtreeLayoutScope.h"
 #include "sky/engine/core/rendering/compositing/CompositingState.h"
-#include "sky/engine/core/rendering/compositing/CompositingTriggers.h"
 #include "sky/engine/core/rendering/style/RenderStyle.h"
 #include "sky/engine/core/rendering/style/StyleInheritedData.h"
 #include "sky/engine/platform/geometry/FloatQuad.h"
@@ -1177,10 +1176,11 @@ inline bool RenderObject::boxDecorationBackgroundIsKnownToBeObscured()
     return m_bitfields.boxDecorationBackgroundState() == HasBoxDecorationBackgroundKnownToBeObscured;
 }
 
-inline void makeMatrixRenderable(TransformationMatrix& matrix, bool has3DRendering)
+inline void makeMatrixRenderable(TransformationMatrix& matrix)
 {
-    if (!has3DRendering)
-        matrix.makeAffine();
+    // FIXME(sky): The old accelerated compositing code didn't do this.

[ojan, 2014/11/26 19:38:51]

Ditto here. I'm doing the non-3D path since that's what the code was already
doing, but we probably need to do some work for making 3D work again.

[abarth-chromium, 2014/11/26 19:48:36]

That's right.  We'll need 4x4 matrix support in Skia.

+    // Do we need this?
+    matrix.makeAffine();
 }
 
 #define DEFINE_RENDER_OBJECT_TYPE_CASTS(thisType, predicate) \