Use PositionMoveType::GraphemeBoundary

third_party/WebKit/Source/core/editing/EditingUtilities.h

Index: third_party/WebKit/Source/core/editing/EditingUtilities.h
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.h b/third_party/WebKit/Source/core/editing/EditingUtilities.h
index fd7071badd8173c7d5c48e1a5887c93d08a41bc1..cc7ea0b2773a676f9d4d6c6431c678ce0f25c206 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.h
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.h
@@ -50,11 +50,10 @@ enum class PositionMoveType {
     // backward deletion, e.g Backspace key. This is similar to
     // |GraphemeCluster| but some tailoring with platform dependent behavior.
     BackwardDeletion,
-    // TODO(yosin): We'll have |GraphemeCluster| move type.
     // Move by a grapheme cluster for user-perceived character in Unicode
     // Standard Annex #29, Unicode text segmentation[1].
     // [1] http://www.unicode.org/reports/tr29/
-    // GraphemeCluster,
+    GraphemeCluster,
 };
 
 class Document;