DOMMatrix: add missing propagation of exceptions.

third_party/WebKit/Source/core/dom/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/dom/DOMMatrixReadOnly.h"
 
 #include "bindings/core/v8/V8ObjectBuilder.h"
 #include "core/dom/DOMMatrix.h"
 #include "core/dom/DOMMatrixInit.h"
 #include "core/dom/DOMPoint.h"
@@ skipping 16 matching lines @@
     other.setM22(other.hasD() ? other.d() : 1);
 
   if (!other.hasM41())
     other.setM41(other.hasE() ? other.e() : 0);
 
   if (!other.hasM42())
     other.setM42(other.hasF() ? other.f() : 0);
 }
 
 String getErrorMessage(const char* a, const char* b) {
-  return String::format("The '%s' property should eqaul the '%s' property.", a,
+  return String::format("The '%s' property should equal the '%s' property.", a,
                         b);
 }
 
 }  // namespace
 
 bool DOMMatrixReadOnly::validateAndFixup(DOMMatrixInit& other,
                                          ExceptionState& exceptionState) {
   if (other.hasA() && other.hasM11() && other.a() != other.m11()) {
     exceptionState.throwTypeError(getErrorMessage("a", "m11"));
     return false;
@@ skipping 72 matching lines @@
         "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());
 }
 
 DOMMatrixReadOnly* DOMMatrixReadOnly::fromMatrix(
     DOMMatrixInit& other,
     ExceptionState& exceptionState) {
-  if (!validateAndFixup(other, exceptionState))
+  if (!validateAndFixup(other, exceptionState)) {
+    DCHECK(exceptionState.hadException());
     return nullptr;
+  }
 
   if (other.is2D()) {
     double args[] = {other.m11(), other.m12(), other.m21(),
                      other.m22(), other.m41(), other.m42()};
     return new DOMMatrixReadOnly(args, 6);
   }
 
   double args[] = {other.m11(), other.m12(), other.m13(), other.m14(),
                    other.m21(), other.m22(), other.m23(), other.m24(),
                    other.m31(), other.m32(), other.m33(), other.m34(),
@@ skipping 182 matching lines @@
   result.addNumber("m41", m41());
   result.addNumber("m42", m42());
   result.addNumber("m43", m43());
   result.addNumber("m44", m44());
   result.addBoolean("is2D", is2D());
   result.addBoolean("isIdentity", isIdentity());
   return result.scriptValue();
 }
 
 }  // namespace blink