Introduce createMarkup function takes two positions

Source/core/editing/StyledMarkupSerializerTest.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 "config.h"
 #include "core/editing/StyledMarkupSerializer.h"
 
 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
@@ skipping 42 matching lines @@
     m_document = toHTMLDocument(&m_dummyPageHolder->document());
     ASSERT(m_document);
 }
 
 template <typename Tree>
 std::string StyledMarkupSerializerTest::serialize()
 {
     using PositionType = typename Tree::PositionType;
     PositionType start = PositionType(m_document->body(), PositionType::PositionIsBeforeChildren);
     PositionType end = PositionType(m_document->body(), PositionType::PositionIsAfterChildren);
-    return CreateMarkupAlgorithm<Tree>::createMarkup(start, end).utf8().data();
+    return createMarkup(start, end).utf8().data();
 }
 
 static PassRefPtrWillBeRawPtr<ShadowRoot> createShadowRootForElementWithIDAndSetInnerHTML(TreeScope& scope, const char* hostElementID, const char* shadowRootContent)
 {
     RefPtrWillBeRawPtr<ShadowRoot> shadowRoot = scope.getElementById(AtomicString::fromUTF8(hostElementID))->createShadowRoot(ASSERT_NO_EXCEPTION);
     shadowRoot->setInnerHTML(String::fromUTF8(shadowRootContent), ASSERT_NO_EXCEPTION);
     return shadowRoot.release();
 }
 
 void StyledMarkupSerializerTest::setBodyContent(const char* bodyContent)
@@ skipping 99 matching lines @@
 
 TEST_F(StyledMarkupSerializerTest, StyleDisplayNone)
 {
     const char* bodyContent = "<b>00<i style='display:none'>11</i>22</b>";
     setBodyContent(bodyContent);
     const char* expectedResult = "<b>0022</b>";
     EXPECT_EQ(expectedResult, serialize<EditingStrategy>());
 }
 
 } // namespace blink