Simplify application of perspective origin.

Source/core/paint/DeprecatedPaintLayer.h

 /*
  * Copyright (C) 2003, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2013 Intel Corporation. All rights reserved.
  *
  * Portions are Copyright (C) 1998 Netscape Communications Corporation.
  *
  * Other contributors:
  *   Robert O'Callahan <roc+@cs.cmu.edu>
  *   David Baron <dbaron@fas.harvard.edu>
  *   Christian Biesinger <cbiesinger@web.de>
@@ skipping 259 matching lines @@
     void clearTransform() { m_transform.clear(); }
 
     // currentTransform computes a transform which takes accelerated animations into account. The
     // resulting transform has transform-origin baked in. If the layer does not have a transform,
     // returns the identity matrix.
     TransformationMatrix currentTransform(ComputedStyle::ApplyTransformOrigin = ComputedStyle::IncludeTransformOrigin) const;
     TransformationMatrix renderableTransform(PaintBehavior) const;
 
     // Get the perspective transform, which is applied to transformed sublayers.
     // Returns true if the layer has a -webkit-perspective.
-    // Note that this transform has the perspective-origin baked in.
+    // Note that this transform does not have the perspective-origin baked in.
     TransformationMatrix perspectiveTransform() const;
     FloatPoint perspectiveOrigin() const;
     bool preserves3D() const { return layoutObject()->style()->transformStyle3D() == TransformStyle3DPreserve3D; }
     bool has3DTransform() const { return m_transform && !m_transform->isAffine(); }
 
     // FIXME: reflections should force transform-style to be flat in the style: https://bugs.webkit.org/show_bug.cgi?id=106959
     bool shouldPreserve3D() const { return !layoutObject()->hasReflection() && layoutObject()->style()->transformStyle3D() == TransformStyle3DPreserve3D; }
 
     void filterNeedsPaintInvalidation();
     bool hasFilter() const { return layoutObject()->hasFilter(); }
@@ skipping 432 matching lines @@
 
 } // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showLayerTree(const blink::DeprecatedPaintLayer*);
 void showLayerTree(const blink::LayoutObject*);
 #endif
 
 #endif // Layer_h