Make VisiblePosition constructor private

Source/core/editing/GranularityStrategyTest.cpp

Index: Source/core/editing/GranularityStrategyTest.cpp
diff --git a/Source/core/editing/GranularityStrategyTest.cpp b/Source/core/editing/GranularityStrategyTest.cpp
index e988f7e8602ac77fb8b67149ddac83ec46a8e2d9..5e6cc9fb3acd7ac669bece8e1c716ce11182c80b 100644
--- a/Source/core/editing/GranularityStrategyTest.cpp
+++ b/Source/core/editing/GranularityStrategyTest.cpp
@@ -124,7 +124,7 @@ void GranularityStrategyTest::parseText(std::vector<Text*> textNodes)
         int wordStartIndexOffset = m_letterPos.size();
         WTF::String str = text->wholeText();
         for (size_t i = 0; i < str.length(); i++) {
-            m_letterPos.push_back(visiblePositionToContentsPoint(VisiblePosition(Position(text, i))));
+            m_letterPos.push_back(visiblePositionToContentsPoint(createVisiblePosition(Position(text, i))));
             char c = str.characterAt(i);
             if (isASCIIAlphanumeric(c) && !wordStarted) {
                 wordStartIndex = i + wordStartIndexOffset;
@@ -138,7 +138,7 @@ void GranularityStrategyTest::parseText(std::vector<Text*> textNodes)
     }
     if (wordStarted) {
         Text* lastNode = textNodes[textNodes.size() - 1];
-        int xEnd = visiblePositionToContentsPoint(VisiblePosition(Position(lastNode, lastNode->wholeText().length()))).x();
+        int xEnd = visiblePositionToContentsPoint(createVisiblePosition(Position(lastNode, lastNode->wholeText().length()))).x();
         IntPoint wordMiddle((m_letterPos[wordStartIndex].x() + xEnd) / 2, m_letterPos[wordStartIndex].y());
         m_wordMiddles.push_back(wordMiddle);
     }
@@ -484,10 +484,10 @@ TEST_F(GranularityStrategyTest, Character)
     selection().setSelection(VisibleSelection(Position(text, 5), Position(text, 6)));
     EXPECT_EQ_SELECTED_TEXT("a");
     // "Foo B^ar B|>az,"
-    selection().moveRangeSelectionExtent(visiblePositionToContentsPoint(VisiblePosition(Position(text, 9))));
+    selection().moveRangeSelectionExtent(visiblePositionToContentsPoint(createVisiblePosition(Position(text, 9))));
     EXPECT_EQ_SELECTED_TEXT("ar B");
     // "F<|oo B^ar Baz,"
-    selection().moveRangeSelectionExtent(visiblePositionToContentsPoint(VisiblePosition(Position(text, 1))));
+    selection().moveRangeSelectionExtent(visiblePositionToContentsPoint(createVisiblePosition(Position(text, 1))));
     EXPECT_EQ_SELECTED_TEXT("oo B");
 }