Remove unused class NGInlineItemRange

This class was once used in NGLineBreaker but is no longer used.

Bug: 636993
Cq-Include-Trybots: master.tryserver.chromium.linux:linux_layout_tests_layout_ng
Change-Id: Ic6823fa745b2d3722c434f009b1b56cbf680dd2b
Reviewed-on: https://chromium-review.googlesource.com/1046290Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556424}

third_party/blink/renderer/core/layout/ng/inline/ng_inline_item.cc

@@ -210,14 +210,4 @@ bool NGInlineItem::HasEndEdge() const {
          !ToLayoutInline(GetLayoutObject())->Continuation();
 }
 
-NGInlineItemRange::NGInlineItemRange(Vector<NGInlineItem>* items,
-                                     unsigned start_index,
-                                     unsigned end_index)
-    : start_item_(&(*items)[start_index]),
-      size_(end_index - start_index),
-      start_index_(start_index) {
-  CHECK_LE(start_index, end_index);
-  CHECK_LE(end_index, items->size());
-}
-
 }  // namespace blink

third_party/blink/renderer/core/layout/ng/inline/ng_inline_item.h

@@ -172,43 +172,6 @@ inline void NGInlineItem::AssertEndOffset(unsigned offset) const {
   DCHECK_LE(offset, end_offset_);
 }
 
-// A vector-like object that points to a subset of an array of |NGInlineItem|.
-// The source vector must keep alive and must not resize while this object
-// is alive.
-class NGInlineItemRange {
-  STACK_ALLOCATED();
-
- public:
-  NGInlineItemRange(Vector<NGInlineItem>*,
-                    unsigned start_index,
-                    unsigned end_index);
-
-  unsigned StartIndex() const { return start_index_; }
-  unsigned EndIndex() const { return start_index_ + size_; }
-  unsigned Size() const { return size_; }
-
-  NGInlineItem& operator[](unsigned index) {
-    CHECK_LT(index, size_);
-    return start_item_[index];
-  }
-  const NGInlineItem& operator[](unsigned index) const {
-    CHECK_LT(index, size_);
-    return start_item_[index];
-  }
-
-  using iterator = NGInlineItem*;
-  using const_iterator = const NGInlineItem*;
-  iterator begin() { return start_item_; }
-  iterator end() { return start_item_ + size_; }
-  const_iterator begin() const { return start_item_; }
-  const_iterator end() const { return start_item_ + size_; }
-
- private:
-  NGInlineItem* start_item_;
-  unsigned size_;
-  unsigned start_index_;
-};
-
 }  // namespace blink
 
 #endif  // NGInlineItem_h

third_party/blink/renderer/core/layout/ng/inline/ng_inline_node.cc

@@ -205,10 +205,6 @@ const Vector<NGInlineItem>& NGInlineNode::Items(bool is_first_line) const {
   return *data.first_line_items_;
 }
 
-NGInlineItemRange NGInlineNode::Items(unsigned start, unsigned end) {
-  return NGInlineItemRange(&MutableData()->items_, start, end);
-}
-
 void NGInlineNode::InvalidatePrepareLayoutForTest() {
   GetLayoutBlockFlow()->ResetNGInlineNodeData();
   DCHECK(!IsPrepareLayoutFinished());

third_party/blink/renderer/core/layout/ng/inline/ng_inline_node.h

@@ -22,7 +22,6 @@ class LayoutBlockFlow;
 struct MinMaxSize;
 class NGConstraintSpace;
 class NGInlineItem;
-class NGInlineItemRange;
 using NGInlineItemsBuilder =
     NGInlineItemsBuilderTemplate<EmptyOffsetMappingBuilder>;
 struct NGInlineNodeData;
@@ -64,7 +63,6 @@ class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
   }
 
   const Vector<NGInlineItem>& Items(bool is_first_line = false) const;
-  NGInlineItemRange Items(unsigned start_index, unsigned end_index);
 
   // Returns the DOM to text content offset mapping of this block. If it is not
   // computed before, compute and store it in NGInlineNodeData.