Make ExceptionState parameter of ContainerNode::querySelector() as an optional parameter

third_party/WebKit/Source/core/editing/RelocatablePositionTest.cpp

 // Copyright 2016 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/editing/RelocatablePosition.h"
 
 #include "core/editing/EditingTestBase.h"
 #include "core/editing/VisiblePosition.h"
 
 namespace blink {
 
 class RelocatablePositionTest : public EditingTestBase {
 };
 
 TEST_F(RelocatablePositionTest, position)
 {
     setBodyContent("<b>foo</b><textarea>bar</textarea>");
-    Node* boldface = document().querySelector("b", ASSERT_NO_EXCEPTION);
-    Node* textarea = document().querySelector("textarea", ASSERT_NO_EXCEPTION);
+    Node* boldface = document().querySelector("b");
+    Node* textarea = document().querySelector("textarea");
 
     RelocatablePosition relocatablePosition(Position(textarea, PositionAnchorType::BeforeAnchor));
     textarea->remove();
 
     // RelocatablePosition should track the given Position even if its original
     // anchor node is moved away from the document.
     Position expectedPosition(boldface, PositionAnchorType::AfterAnchor);
     Position trackedPosition = relocatablePosition.position();
     EXPECT_TRUE(trackedPosition.anchorNode()->isConnected());
     EXPECT_EQ(createVisiblePosition(expectedPosition).deepEquivalent(), createVisiblePosition(trackedPosition).deepEquivalent());
 }
 
 } // namespace blink