[ Do not submit ] Prototype for invalidation analysis

Source/core/rendering/GraphicsContextAnnotator.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 14 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef GraphicsContextAnnotator_h
 #define GraphicsContextAnnotator_h
 
+// FIXME: Introduce a real paint API instead of piggybacking on GraphicsContextAnnotator.
 #define ANNOTATE_GRAPHICS_CONTEXT(paintInfo, renderer) \
+    GraphicsContextAnnotator::trackPaintInvalidation(paintInfo, renderer); \
     GraphicsContextAnnotator scopedGraphicsContextAnnotator; \
     if (UNLIKELY(paintInfo.context->annotationMode())) \
         scopedGraphicsContextAnnotator.annotate(paintInfo, renderer)
 
 namespace blink {
 
 class GraphicsContext;
 struct PaintInfo;
 class RenderObject;
 
 class GraphicsContextAnnotator {
 public:
     GraphicsContextAnnotator()
         : m_context(0)
     { }
 
     ~GraphicsContextAnnotator()
     {
         if (UNLIKELY(m_context != 0))
             finishAnnotation();
     }
 
     void annotate(const PaintInfo&, const RenderObject*);
 
+    static void trackPaintInvalidation(const PaintInfo&, RenderObject*);
+
 private:
     void finishAnnotation();
 
     GraphicsContext* m_context;
 };
 
 } // namespace blink
 
 #endif // GraphicsContextAnnotator_h