Add APIs for dynamic display lists, using SkDrawable and SkPictureRecorder::endRecordingAsDrawable.

sky/engine/core/painting/Canvas.cpp

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "math.h"
 
 #include "sky/engine/core/painting/Canvas.h"
 
 #include "sky/engine/core/dom/Document.h"
 #include "sky/engine/core/dom/Element.h"
@@ skipping 109 matching lines @@
 }
 
 void Canvas::drawLine(const Point& p1, const Point& p2, const Paint* paint)
 {
     if (!m_canvas)
         return;
     ASSERT(paint);
     m_canvas->drawLine(p1.sk_point.x(), p1.sk_point.y(), p2.sk_point.x(), p2.sk_point.y(), paint->paint());
 }
 
-void Canvas::drawPicture(Picture* picture)
-{
-    if (!m_canvas)
-        return;
-    ASSERT(picture);
-    m_canvas->drawPicture(picture->toSkia());
-}
-
 void Canvas::drawPaint(const Paint* paint)
 {
     if (!m_canvas)
         return;
     ASSERT(paint);
     m_canvas->drawPaint(paint->paint());
 }
 
 void Canvas::drawRect(const Rect& rect, const Paint* paint)
 {
@@ skipping 44 matching lines @@
     m_canvas->drawBitmap(image->bitmap(), p.sk_point.x(), p.sk_point.y(), &paint->paint());
 }
 
 void Canvas::drawImageRect(const CanvasImage* image, Rect& src, Rect& dst, Paint* paint) {
     if (!m_canvas)
         return;
     ASSERT(image);
     m_canvas->drawBitmapRectToRect(image->bitmap(), &src.sk_rect, dst.sk_rect, &paint->paint());
 }
 
+void Canvas::drawPicture(Picture* picture)
+{
+    if (!m_canvas)
+        return;
+    ASSERT(picture);
+    m_canvas->drawPicture(picture->toSkia());
+}
+
+void Canvas::drawDrawable(Drawable* drawable)
+{
+    if (!m_canvas)
+        return;
+    ASSERT(drawable);
+    m_canvas->drawDrawable(drawable->toSkia());
+}
+
 } // namespace blink