Introduce absoluteCaretBoundsOf() for VisiblePosition

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 9a1aee6e4c37832eb80155a234bd4f22c48ea71b..e988f7e8602ac77fb8b67149ddac83ec46a8e2d9 100644
--- a/Source/core/editing/GranularityStrategyTest.cpp
+++ b/Source/core/editing/GranularityStrategyTest.cpp
@@ -28,7 +28,7 @@ namespace blink {
 
 IntPoint visiblePositionToContentsPoint(const VisiblePosition& pos)
 {
-    IntPoint result = pos.absoluteCaretBounds().minXMaxYCorner();
+    IntPoint result = absoluteCaretBoundsOf(pos).minXMaxYCorner();
     // Need to move the point at least by 1 - caret's minXMaxYCorner is not
     // evaluated to the same line as the text by hit testing.
     result.move(0, -1);