Implement DOMMatrixReadOnly multiple and constructor functions

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

Index: third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
diff --git a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
index 065340e0801b98b7941821fc6fc0b6ff57bbf419..aedb1260c5b4214f3f95bb396d8d6c97b39b9d00 100644
--- a/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
+++ b/third_party/WebKit/Source/core/dom/DOMMatrixReadOnly.idl
@@ -5,7 +5,7 @@
 // http://dev.w3.org/fxtf/geometry/#DOMMatrix
 
 [
-    // FIXME: Constructor(sequence<unrestricted double> numberSequence)
+    Constructor(sequence<unrestricted double> numberSequence),
     // FIXME: Exposed=(Window,Worker)
     RuntimeEnabled=GeometryInterfaces,
 ] interface DOMMatrixReadOnly {
@@ -55,7 +55,7 @@
                               optional unrestricted double originX = 0,
                               optional unrestricted double originY = 0,
                               optional unrestricted double originZ = 0);
-    DOMMatrix multiply(DOMMatrix other);
+    DOMMatrixReadOnly multiply(DOMMatrixReadOnly other);
 
     Float32Array toFloat32Array();
     Float64Array toFloat64Array();