[SVG] DisplayList-based patterns.

Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 489 matching lines @@
 
     SkCanvas* savedCanvas = m_canvas;
     SkMatrix savedMatrix = getTotalMatrix();
 
     if (!contextDisabled()) {
         IntRect recordingRect = enclosingIntRect(bounds);
         m_canvas = displayList->beginRecording(recordingRect.size());
 
         // We want the bounds offset mapped to (0, 0), such that the display list content
         // is fully contained within the SkPictureRecord's bounds.
+        // FIXME: we record this translation *in the picture*, and compensate externally in
+        // drawDisplayList(). But if the picture is passed to an unaware consumer, this info
+        // is lost. I don't think we have to record the translation, we should investigate
+        // extracting it out of the picture.
         if (!toFloatSize(bounds.location()).isZero()) {
             m_canvas->translate(-bounds.x(), -bounds.y());
             // To avoid applying the offset repeatedly in getTotalMatrix(), we pre-apply it here.
             savedMatrix.preTranslate(bounds.x(), bounds.y());
         }
     }
 
     m_recordingStateStack.append(RecordingState(savedCanvas, savedMatrix, displayList));
 }
 
@@ skipping 1418 matching lines @@
         // FIXME: This is to not break tests (it results in the filter bitmap flag
         // being set to true). We need to decide if we respect InterpolationNone
         // being returned from computeInterpolationQuality.
         resampling = InterpolationLow;
     }
     resampling = limitInterpolationQuality(this, resampling);
     paint->setFilterLevel(static_cast<SkPaint::FilterLevel>(resampling));
 }
 
 }