Canvas.concat takes a 16-element Float32List instead of an array.

sky/engine/core/painting/Canvas.cpp

Index: sky/engine/core/painting/Canvas.cpp
diff --git a/sky/engine/core/painting/Canvas.cpp b/sky/engine/core/painting/Canvas.cpp
index 1fa585569f7064fcb3a07ecd2a2d8101a3604345..a0d14a5299b25427c8d0f2a58202d95aba263b27 100644
--- a/sky/engine/core/painting/Canvas.cpp
+++ b/sky/engine/core/painting/Canvas.cpp
@@ -83,15 +83,13 @@ void Canvas::skew(float sx, float sy)
     m_canvas->skew(sx, sy);
 }
 
-void Canvas::concat(const Vector<float>& matrix)
+void Canvas::concat(const Matrix4& matrix)
 {
     if (!m_canvas)
         return;
     ASSERT(m_displayList->isRecording());
-    ASSERT(matrix.size() == 9);
-    SkMatrix sk_matrix;
-    sk_matrix.set9(matrix.data());
-    m_canvas->concat(sk_matrix);
+    ASSERT(!matrix.is_null);
+    m_canvas->concat(matrix.sk_matrix);
 }
 
 void Canvas::clipRect(const Rect& rect)