Avoid duplicate functions/code in core/editing: computeDistance

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 7f24f312bbb627f95d0907420623dbd707678ec9..1e3c6bc7733eadd0229d009007735825791547e8 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.h
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.h
@@ -418,6 +418,18 @@ String stringWithRebalancedWhitespace(const String&,
 const String& nonBreakingSpaceString();
 
 // -------------------------------------------------------------------------
+// Distance calculation functions
+// -------------------------------------------------------------------------
+
+// If current position is at grapheme boundary, return 0; otherwise, return the
+// distance to its nearest left grapheme boundary.
+size_t computeDistanceToLeftGraphemeBoundary(const Position&);
+
+// If current position is at grapheme boundary, return 0; otherwise, return the
+// distance to its nearest right grapheme boundary.
+size_t computeDistanceToRightGraphemeBoundary(const Position&);
+
+// -------------------------------------------------------------------------
 // Events
 // -------------------------------------------------------------------------