[SharedArrayBuffer] Prevent SharedArrayBuffer being used in Web APIs

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 97 matching lines @@
   if (sequence.size() != 6 && sequence.size() != 16) {
     exceptionState.throwTypeError(
         "The sequence must contain 6 elements for a 2D matrix or 16 elements "
         "for a 3D matrix.");
     return nullptr;
   }
   return new DOMMatrixReadOnly(sequence, sequence.size());
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::fromFloat32Array(
-    DOMFloat32Array* float32Array,
+    NotShared<DOMFloat32Array> float32Array,
     ExceptionState& exceptionState) {
-  if (float32Array->length() != 6 && float32Array->length() != 16) {
+  if (float32Array.view()->length() != 6 &&
+      float32Array.view()->length() != 16) {
     exceptionState.throwTypeError(
         "The sequence must contain 6 elements for a 2D matrix or 16 elements a "
         "for 3D matrix.");
     return nullptr;
   }
-  return new DOMMatrixReadOnly(float32Array->data(), float32Array->length());
+  return new DOMMatrixReadOnly(float32Array.view()->data(),
+                               float32Array.view()->length());
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::fromFloat64Array(
-    DOMFloat64Array* float64Array,
+    NotShared<DOMFloat64Array> float64Array,
     ExceptionState& exceptionState) {
-  if (float64Array->length() != 6 && float64Array->length() != 16) {
+  if (float64Array.view()->length() != 6 &&
+      float64Array.view()->length() != 16) {
     exceptionState.throwTypeError(
         "The sequence must contain 6 elements for a 2D matrix or 16 elements "
         "for a 3D matrix.");
     return nullptr;
   }
-  return new DOMMatrixReadOnly(float64Array->data(), float64Array->length());
+  return new DOMMatrixReadOnly(float64Array.view()->data(),
+                               float64Array.view()->length());
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::fromMatrix(
     DOMMatrixInit& other,
     ExceptionState& exceptionState) {
   if (!validateAndFixup(other, exceptionState)) {
     DCHECK(exceptionState.hadException());
     return nullptr;
   }
 
@@ skipping 119 matching lines @@
              point.w() * m44();
   return DOMPoint::create(x, y, z, w);
 }
 
 DOMMatrixReadOnly::DOMMatrixReadOnly(const TransformationMatrix& matrix,
                                      bool is2D) {
   m_matrix = TransformationMatrix::create(matrix);
   m_is2D = is2D;
 }
 
-DOMFloat32Array* DOMMatrixReadOnly::toFloat32Array() const {
+NotShared<DOMFloat32Array> DOMMatrixReadOnly::toFloat32Array() const {
   float array[] = {
       static_cast<float>(m_matrix->m11()), static_cast<float>(m_matrix->m12()),
       static_cast<float>(m_matrix->m13()), static_cast<float>(m_matrix->m14()),
       static_cast<float>(m_matrix->m21()), static_cast<float>(m_matrix->m22()),
       static_cast<float>(m_matrix->m23()), static_cast<float>(m_matrix->m24()),
       static_cast<float>(m_matrix->m31()), static_cast<float>(m_matrix->m32()),
       static_cast<float>(m_matrix->m33()), static_cast<float>(m_matrix->m34()),
       static_cast<float>(m_matrix->m41()), static_cast<float>(m_matrix->m42()),
       static_cast<float>(m_matrix->m43()), static_cast<float>(m_matrix->m44())};
 
-  return DOMFloat32Array::create(array, 16);
+  return NotShared<DOMFloat32Array>(DOMFloat32Array::create(array, 16));
 }
 
-DOMFloat64Array* DOMMatrixReadOnly::toFloat64Array() const {
+NotShared<DOMFloat64Array> DOMMatrixReadOnly::toFloat64Array() const {
   double array[] = {
       m_matrix->m11(), m_matrix->m12(), m_matrix->m13(), m_matrix->m14(),
       m_matrix->m21(), m_matrix->m22(), m_matrix->m23(), m_matrix->m24(),
       m_matrix->m31(), m_matrix->m32(), m_matrix->m33(), m_matrix->m34(),
       m_matrix->m41(), m_matrix->m42(), m_matrix->m43(), m_matrix->m44()};
 
-  return DOMFloat64Array::create(array, 16);
+  return NotShared<DOMFloat64Array>(DOMFloat64Array::create(array, 16));
 }
 
 const String DOMMatrixReadOnly::toString() const {
   std::stringstream stream;
   if (is2D()) {
     stream << "matrix(" << a() << ", " << b() << ", " << c() << ", " << d()
            << ", " << e() << ", " << f();
   } else {
     stream << "matrix3d(" << m11() << ", " << m12() << ", " << m13() << ", "
            << m14() << ", " << m21() << ", " << m22() << ", " << m23() << ", "
@@ skipping 79 matching lines @@
 
   m_matrix->makeIdentity();
   operations.apply(FloatSize(0, 0), *m_matrix);
 
   m_is2D = !operations.has3DOperation();
 
   return;
 }
 
 }  // namespace blink