Make exceptionState parameter of Document::createElement() to have default value

third_party/WebKit/Source/core/animation/AnimationStackTest.cpp

Index: third_party/WebKit/Source/core/animation/AnimationStackTest.cpp
diff --git a/third_party/WebKit/Source/core/animation/AnimationStackTest.cpp b/third_party/WebKit/Source/core/animation/AnimationStackTest.cpp
index 55de842d37f5cabf8dc88e7414f2be437baef90a..9927b35bb67873ec36cb4c83a4873f0e7b6c3446 100644
--- a/third_party/WebKit/Source/core/animation/AnimationStackTest.cpp
+++ b/third_party/WebKit/Source/core/animation/AnimationStackTest.cpp
@@ -24,7 +24,7 @@ class AnimationAnimationStackTest : public ::testing::Test {
     document = &pageHolder->document();
     document->animationClock().resetTimeForTesting();
     timeline = DocumentTimeline::create(document.get());
-    element = document->createElement("foo", ASSERT_NO_EXCEPTION);
+    element = document->createElement("foo");
   }
 
   Animation* play(KeyframeEffect* effect, double startTime) {