Disallow setting invalid values for registered properties via CSSOM

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

 // Copyright 2015 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/VisiblePosition.h"
 
 #include "core/css/CSSStyleDeclaration.h"
 #include "core/editing/EditingTestBase.h"
 #include "core/editing/VisibleUnits.h"
 
@@ skipping 71 matching lines @@
 }
 
 TEST_F(VisiblePositionTest, NonNullInvalidatedAfterStyleChange) {
   setBodyContent("<div>one</div><p>two</p>");
 
   Element* paragraph = document().querySelector("p");
   Element* div = document().querySelector("div");
   Position position(paragraph->firstChild(), 1);
 
   VisiblePosition visiblePosition1 = createVisiblePosition(position);
-  div->style()->setProperty("color", "red", "important", ASSERT_NO_EXCEPTION);
+  div->style()->setProperty(nullptr, "color", "red", "important",
+                            ASSERT_NO_EXCEPTION);
   EXPECT_FALSE(visiblePosition1.isValid());
 
   updateAllLifecyclePhases();
 
   VisiblePosition visiblePosition2 = createVisiblePosition(position);
-  div->style()->setProperty("display", "none", "important",
+  div->style()->setProperty(nullptr, "display", "none", "important",
                             ASSERT_NO_EXCEPTION);
   EXPECT_FALSE(visiblePosition2.isValid());
 
   updateAllLifecyclePhases();
 
   // Invalid VisiblePosition can never become valid again.
   EXPECT_FALSE(visiblePosition1.isValid());
   EXPECT_FALSE(visiblePosition2.isValid());
 }
 
 #endif
 
 }  // namespace blink