Add a basic custom painting facility to Sky

sky/engine/core/painting/Paint.h

 // 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.
 
 #ifndef SKY_ENGINE_CORE_PAINTING_PAINT_H_
 #define SKY_ENGINE_CORE_PAINTING_PAINT_H_
 
 #include "sky/engine/tonic/dart_wrappable.h"
 #include "sky/engine/wtf/PassRefPtr.h"
 #include "sky/engine/wtf/RefCounted.h"
@@ skipping 11 matching lines @@
     }
 
     bool isAntiAlias() const { return m_paint.isAntiAlias(); }
     void setIsAntiAlias(bool value) { m_paint.setAntiAlias(value); }
 
     unsigned color() const { return m_paint.getColor(); }
     void setColor(unsigned color) { m_paint.setColor(color); }
 
     void setARGB(unsigned a, unsigned r, unsigned g, unsigned b)
     {
-        m_paint.setARGB(r, g, b, a);
+        m_paint.setARGB(a, r, g, b);

[ojan, 2015/03/19 22:30:04]

hah

     }
 
     const SkPaint& paint() const { return m_paint; }
 
 private:
     Paint();
 
     SkPaint m_paint;
 };
 
 } // namespace blink
 
 #endif  // SKY_ENGINE_CORE_PAINTING_PAINT_H_