GeometryInterface: Add DOMMatrixInit and fromMatrix().

third_party/WebKit/Source/core/dom/DOMMatrix.idl

 // Copyright 2014 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.
 
 // http://dev.w3.org/fxtf/geometry/#DOMMatrix
 
 [
     Constructor,
     Constructor(DOMMatrixReadOnly other),
     // FIXME: Should implement more constructors (See: crbug.com/388780)
     // FIXME: Exposed=(Window,Worker)
     RuntimeEnabled=GeometryInterfaces,
 ] interface DOMMatrix : DOMMatrixReadOnly {
+    [RaisesException, NewObject] static DOMMatrix fromMatrix(optional DOMMatrixInit other);
+
     // These attributes are simple aliases for certain elements of the 4x4 matrix
     inherit attribute unrestricted double a;
     inherit attribute unrestricted double b;
     inherit attribute unrestricted double c;
     inherit attribute unrestricted double d;
     inherit attribute unrestricted double e;
     inherit attribute unrestricted double f;
 
     inherit attribute unrestricted double m11;
     inherit attribute unrestricted double m12;
     inherit attribute unrestricted double m13;
     inherit attribute unrestricted double m14;
     inherit attribute unrestricted double m21;
     inherit attribute unrestricted double m22;
     inherit attribute unrestricted double m23;
     inherit attribute unrestricted double m24;
     inherit attribute unrestricted double m31;
     inherit attribute unrestricted double m32;
     inherit attribute unrestricted double m33;
     inherit attribute unrestricted double m34;
     inherit attribute unrestricted double m41;
     inherit attribute unrestricted double m42;
     inherit attribute unrestricted double m43;
     inherit attribute unrestricted double m44;
 
     // FIXME: Should implement some methods (See: crbug.com/388780)

[dominicc (has gone to gerrit), 2016/09/12 05:19:43]

Might be nice to update add a comment to this bug with a list summarizing what
work remains, and link to that comment? That issue is a lot to trace through
now.

[zino, 2016/09/12 09:12:42]

Done.

     // Mutable transform methods
-    DOMMatrix multiplySelf(DOMMatrix other);
-    DOMMatrix preMultiplySelf(DOMMatrix other);
+    [RaisesException] DOMMatrix multiplySelf(optional DOMMatrixInit other);
+    [RaisesException] DOMMatrix preMultiplySelf(optional DOMMatrixInit other);
     DOMMatrix translateSelf(unrestricted double tx,
                             unrestricted double ty,
                             optional unrestricted double tz = 0);
     DOMMatrix scaleSelf(unrestricted double scale,
                         optional unrestricted double originX = 0,
                         optional unrestricted double originY = 0);
     DOMMatrix scale3dSelf(unrestricted double scale,
                           optional unrestricted double originX = 0,
                           optional unrestricted double originY = 0,
                           optional unrestricted double originZ = 0);
     DOMMatrix scaleNonUniformSelf(unrestricted double scaleX,
                                   optional unrestricted double scaleY = 1,
                                   optional unrestricted double scaleZ = 1,
                                   optional unrestricted double originX = 0,
                                   optional unrestricted double originY = 0,
                                   optional unrestricted double originZ = 0);
     DOMMatrix skewXSelf(optional unrestricted double sx = 0);
     DOMMatrix skewYSelf(optional unrestricted double sy = 0);
     DOMMatrix invertSelf();
 };