Count element name validity per DOM versus HTML parsing.

third_party/WebKit/Source/core/dom/custom/CustomElementTest.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/dom/custom/CustomElement.h"
 
 #include "core/HTMLNames.h"
 #include "core/SVGNames.h"
 #include "core/dom/Document.h"
 #include "core/dom/custom/CustomElementDefinition.h"
@@ skipping 171 matching lines @@
        Element::kV0WaitingForUpgrade},
       {"_-X", CustomElementState::kUncustomized, Element::kV0WaitingForUpgrade},
   };
   std::unique_ptr<DummyPageHolder> page_holder = DummyPageHolder::Create();
   Document& document = page_holder->GetDocument();
   for (const auto& data : create_element_data) {
     Element* element = document.createElement(data.name);
     EXPECT_EQ(data.state, element->GetCustomElementState()) << data.name;
     EXPECT_EQ(data.v0state, element->GetV0CustomElementState()) << data.name;
 
-    element = document.createElementNS(HTMLNames::xhtmlNamespaceURI, data.name,
-                                       ASSERT_NO_EXCEPTION);
+    element = document.createElementNS(nullptr, HTMLNames::xhtmlNamespaceURI,
+                                       data.name, ASSERT_NO_EXCEPTION);
     EXPECT_EQ(data.state, element->GetCustomElementState()) << data.name;
     EXPECT_EQ(data.v0state, element->GetV0CustomElementState()) << data.name;
 
-    element = document.createElementNS(SVGNames::svgNamespaceURI, data.name,
-                                       ASSERT_NO_EXCEPTION);
+    element = document.createElementNS(nullptr, SVGNames::svgNamespaceURI,
+                                       data.name, ASSERT_NO_EXCEPTION);
     EXPECT_EQ(CustomElementState::kUncustomized,
               element->GetCustomElementState())
         << data.name;
     EXPECT_EQ(data.v0state, element->GetV0CustomElementState()) << data.name;
   }
 }
 
 TEST(CustomElementTest,
      CreateElement_TagNameCaseHandlingCreatingCustomElement) {
   // register a definition
@@ skipping 13 matching lines @@
 
   // create an element with an uppercase tag name
   Document& document = holder->GetDocument();
   EXPECT_TRUE(document.IsHTMLDocument())
       << "this test requires a HTML document";
   Element* element = document.createElement("A-A", should_not_throw);
   EXPECT_EQ(definition, element->GetCustomElementDefinition());
 }
 
 }  // namespace blink