Move "line" granularity related functions to VisibleUnitLine.cpp

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

 /*
  * Copyright (C) 2004 Apple Computer, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 332 matching lines @@
 
 CORE_EXPORT bool RendersInDifferentPosition(const Position&, const Position&);
 
 CORE_EXPORT Position SkipWhitespace(const Position&);
 CORE_EXPORT PositionInFlatTree SkipWhitespace(const PositionInFlatTree&);
 
 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&);
 
 Position NextRootInlineBoxCandidatePosition(Node*,
                                             const VisiblePosition&,
                                             EditableType);
 
 Position PreviousRootInlineBoxCandidatePosition(Node*,
                                                 const VisiblePosition&,
                                                 EditableType);
 
 }  // namespace blink
 
 #endif  // VisibleUnits_h