CANCELLED Merge SelectionAdjuster into VisibleSelection part 1

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

Index: third_party/WebKit/Source/core/editing/SelectionAdjuster.h
diff --git a/third_party/WebKit/Source/core/editing/SelectionAdjuster.h b/third_party/WebKit/Source/core/editing/SelectionAdjuster.h
index 92df242ae6802d952a1163c79ec7f054f13d712d..13a1f1361e8b36a225e8244f5c1eb36e355e6ff2 100644
--- a/third_party/WebKit/Source/core/editing/SelectionAdjuster.h
+++ b/third_party/WebKit/Source/core/editing/SelectionAdjuster.h
@@ -6,21 +6,17 @@
 #define SelectionAdjuster_h
 
 #include "core/editing/VisibleSelection.h"
-#include "wtf/Allocator.h"
 
 namespace blink {
 
-// |SelectionAdjuster| adjusts positions in |VisibleSelection| directly without
-// calling |validate()|. Users of |SelectionAdjuster| should keep invariant of
-// |VisibleSelection|, e.g. all positions are canonicalized.
-class CORE_EXPORT SelectionAdjuster final {
-  STATIC_ONLY(SelectionAdjuster);
-
- public:
-  static void adjustSelectionToAvoidCrossingShadowBoundaries(VisibleSelection*);
-  static void adjustSelectionToAvoidCrossingShadowBoundaries(
-      VisibleSelectionInFlatTree*);
-};
+// TODO(xiaochengh): Move everything to VisibleSelection.cpp.
+
+enum class AdjustDirection { kAdjustNone, kAdjustStart, kAdjustEnd };
+
+std::pair<AdjustDirection, Position> adjustmentToAvoidCrossingShadowBoundaries(
+    const VisibleSelection&);
+std::pair<AdjustDirection, PositionInFlatTree>
+adjustmentToAvoidCrossingShadowBoundaries(const VisibleSelectionInFlatTree&);
 
 }  // namespace blink