Stop accepting string constructor of DOMMatrix on workers

third_party/WebKit/Source/core/geometry/DOMMatrixReadOnly.cpp

 // 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.
 
 #include "core/geometry/DOMMatrixReadOnly.h"
 
 #include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/CSSToLengthConversionData.h"
 #include "core/css/CSSValueList.h"
@@ skipping 74 matching lines @@
   SetDictionaryMembers(other);
   if (!other.hasIs2D()) {
     bool is2d = !(other.m31() || other.m32() || other.m13() || other.m23() ||
                   other.m43() || other.m14() || other.m24() || other.m34() ||
                   other.m33() != 1 || other.m44() != 1);
     other.setIs2D(is2d);
   }
   return true;
 }
 
-DOMMatrixReadOnly* DOMMatrixReadOnly::Create(ExceptionState& exception_state) {
+DOMMatrixReadOnly* DOMMatrixReadOnly::Create(
+    ExecutionContext* execution_context,
+    ExceptionState& exception_state) {
   return new DOMMatrixReadOnly(TransformationMatrix());
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::Create(
+    ExecutionContext* execution_context,
     StringOrUnrestrictedDoubleSequence& init,
     ExceptionState& exception_state) {
   if (init.isString()) {
+    if (!execution_context->IsDocument()) {
+      exception_state.ThrowTypeError(
+          "DOMMatrix can't be constructed with strings on workers.");
+      return nullptr;
+    }
+
     DOMMatrixReadOnly* matrix = new DOMMatrixReadOnly(TransformationMatrix());
     matrix->SetMatrixValueFromString(init.getAsString(), exception_state);
     return matrix;
   }
 
   if (init.isUnrestrictedDoubleSequence()) {
     const Vector<double>& sequence = init.getAsUnrestrictedDoubleSequence();
     if (sequence.size() != 6 && sequence.size() != 16) {
       exception_state.ThrowTypeError(
           "The sequence must contain 6 elements for a 2D matrix or 16 elements "
@@ skipping 286 matching lines @@
 
   matrix_->MakeIdentity();
   operations.Apply(FloatSize(0, 0), *matrix_);
 
   is2d_ = !operations.Has3DOperation();
 
   return;
 }
 
 }  // namespace blink