WIP: prefer using EphemeralRange for SpellChecker.

Source/core/editing/VisibleSelection.cpp

Index: Source/core/editing/VisibleSelection.cpp
diff --git a/Source/core/editing/VisibleSelection.cpp b/Source/core/editing/VisibleSelection.cpp
index 4f780ba57ce27365d0f3cb6e760583a6f71a8b6f..9b3a0a1df98988528504b026556975697fe0bc6d 100644
--- a/Source/core/editing/VisibleSelection.cpp
+++ b/Source/core/editing/VisibleSelection.cpp
@@ -230,6 +230,15 @@ PassRefPtrWillBeRawPtr<Range> firstRangeOf(const VisibleSelection& selection)
     return Range::create(*start.document(), start, end);

[yosin_UTC9, 2015/09/10 06:37:03]

Please change to use |firstEphemeralRangeOf()|.
We don't want to have duplicated code.

 }
 
+EphemeralRange firstEphemeralRangeOf(const VisibleSelection& selection)
+{
+    if (selection.isNone())
+        return EphemeralRange();
+    Position start = selection.start().parentAnchoredEquivalent();

[yosin_UTC9, 2015/09/10 06:37:03]

nit: |const Position|.

+    Position end = selection.end().parentAnchoredEquivalent();

[yosin_UTC9, 2015/09/10 06:37:04]

nit: |const Position|.

+    return EphemeralRange(start, end);
+}
+
 EphemeralRange VisibleSelection::toNormalizedEphemeralRange() const
 {
     if (isNone())