Oilpan: move SVG property hierarchy to the heap.

Source/core/svg/SVGPathSeg.idl

 /*
  * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
  * Copyright (C) 2006, 2009 Apple 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 10 matching lines @@
  * 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.
  */
 
 [
     DependentLifetime,
     RuntimeEnabled=SVG1DOM,
     MeasureAs=SVGPathSegDOM,
+    WillBeGarbageCollected,
 ] interface SVGPathSeg {
     // Path Segment Types
     const unsigned short PATHSEG_UNKNOWN = 0;
     const unsigned short PATHSEG_CLOSEPATH = 1;
     const unsigned short PATHSEG_MOVETO_ABS = 2;
     const unsigned short PATHSEG_MOVETO_REL = 3;
     const unsigned short PATHSEG_LINETO_ABS = 4;
     const unsigned short PATHSEG_LINETO_REL = 5;
     const unsigned short PATHSEG_CURVETO_CUBIC_ABS = 6;
     const unsigned short PATHSEG_CURVETO_CUBIC_REL = 7;
     const unsigned short PATHSEG_CURVETO_QUADRATIC_ABS = 8;
     const unsigned short PATHSEG_CURVETO_QUADRATIC_REL = 9;
     const unsigned short PATHSEG_ARC_ABS = 10;
     const unsigned short PATHSEG_ARC_REL = 11;
     const unsigned short PATHSEG_LINETO_HORIZONTAL_ABS = 12;
     const unsigned short PATHSEG_LINETO_HORIZONTAL_REL = 13;
     const unsigned short PATHSEG_LINETO_VERTICAL_ABS = 14;
     const unsigned short PATHSEG_LINETO_VERTICAL_REL = 15;
     const unsigned short PATHSEG_CURVETO_CUBIC_SMOOTH_ABS = 16;
     const unsigned short PATHSEG_CURVETO_CUBIC_SMOOTH_REL = 17;
     const unsigned short PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS = 18;
     const unsigned short PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL = 19;
 
     readonly attribute unsigned short pathSegType;
     readonly attribute DOMString pathSegTypeAsLetter;
 };