Move "line" granularity related functions to VisibleUnitLine.cpp

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

Index: third_party/WebKit/Source/core/editing/VisibleUnits.h
diff --git a/third_party/WebKit/Source/core/editing/VisibleUnits.h b/third_party/WebKit/Source/core/editing/VisibleUnits.h
index 60f1bb351a7a81626fe35fcb54a2ea94f8df9869..bac1e3f84b8ab43cdaf263e05acfa5280ba20234 100644
--- a/third_party/WebKit/Source/core/editing/VisibleUnits.h
+++ b/third_party/WebKit/Source/core/editing/VisibleUnits.h
@@ -350,6 +350,21 @@ CORE_EXPORT IntRect ComputeTextRect(const EphemeralRange&);
 IntRect ComputeTextRect(const EphemeralRangeInFlatTree&);
 FloatRect ComputeTextFloatRect(const EphemeralRange&);
 
+// Export below functions only for |VisibleUnit| family.
+PositionWithAffinity HonorEditingBoundaryAtOrBefore(const PositionWithAffinity&,
+                                                    const Position&);
+
+PositionInFlatTreeWithAffinity HonorEditingBoundaryAtOrBefore(
+    const PositionInFlatTreeWithAffinity&,
+    const PositionInFlatTree&);
+
+VisiblePosition HonorEditingBoundaryAtOrAfter(const VisiblePosition&,
+                                              const Position&);
+
+VisiblePositionInFlatTree HonorEditingBoundaryAtOrAfter(
+    const VisiblePositionInFlatTree&,
+    const PositionInFlatTree&);
+
 // Export below functions only for |SelectionModifier|.
 VisiblePosition HonorEditingBoundaryAtOrBefore(const VisiblePosition&,
                                                const Position&);