Move layouet/LayoutView::setSelection() to editing/LayoutSelection

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

Index: third_party/WebKit/Source/core/editing/LayoutSelection.h
diff --git a/third_party/WebKit/Source/core/editing/LayoutSelection.h b/third_party/WebKit/Source/core/editing/LayoutSelection.h
index 18de59f5fdf7d88ee2883906bf561c9df2e22177..db981e09b0ed081b14676c869abf101c14952cfc 100644
--- a/third_party/WebKit/Source/core/editing/LayoutSelection.h
+++ b/third_party/WebKit/Source/core/editing/LayoutSelection.h
@@ -41,6 +41,22 @@ class LayoutSelection final : public GarbageCollected<LayoutSelection> {
   void SetHasPendingSelection() { has_pending_selection_ = true; }
   void Commit(LayoutView&);
 
+  IntRect SelectionBounds();
+  void InvalidatePaintForSelection();
+  enum SelectionPaintInvalidationMode {
+    kPaintInvalidationNewXOROld,
+    kPaintInvalidationNewMinusOld
+  };
+  void SetSelection(
+      LayoutObject* start,
+      int start_pos,
+      LayoutObject*,
+      int end_pos,
+      SelectionPaintInvalidationMode = kPaintInvalidationNewXOROld);
+  void ClearSelection();
+  void SelectionStartEnd(int& start_pos, int& end_pos);
+  void OnDocumentShutdown();
+
   DECLARE_TRACE();
 
  private:
@@ -53,6 +69,25 @@ class LayoutSelection final : public GarbageCollected<LayoutSelection> {
 
   Member<FrameSelection> frame_selection_;
   bool has_pending_selection_ : 1;
+
+  // The current selection represented as 2 boundaries.
+  // Selection boundaries are represented in LayoutView by a tuple
+  // (LayoutObject, DOM node offset).
+  // See http://www.w3.org/TR/dom/#range for more information.
+  //
+  // |m_selectionStartPos| and |m_selectionEndPos| are only valid for
+  // |Text| node without 'transform' or 'first-letter'.
+  //
+  // Those are used for selection painting and paint invalidation upon
+  // selection change.
+  LayoutObject* selection_start_;
+  LayoutObject* selection_end_;
+
+  // TODO(yosin): Clarify the meaning of these variables. editing/ passes
+  // them as offsets in the DOM tree  but layout uses them as offset in the
+  // layout tree.
+  int selection_start_pos_;
+  int selection_end_pos_;
 };
 
 }  // namespace blink