Remove |LayoutBlockFlow::FragmentItems|

After recent removals of calls to |LayoutBlockFlow::
FragmentItems|, only unsed test code was left. This patch
removes it along with the function itself.

Bug: 1061423
Change-Id: I84edecc0cd742269df04067dec5741c75c0a66c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2507414Reviewed-by: Kent Tamura <tkent@chromium.org>
Reviewed-by: Yoshifumi Inoue <yosin@chromium.org>
Reviewed-by: Morten Stenshorne <mstensho@chromium.org>
Commit-Queue: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#822648}

third_party/blink/renderer/core/layout/layout_block_flow.cc

@@ -2479,13 +2479,6 @@ void LayoutBlockFlow::SetPaintFragment(
   NOT_DESTROYED();
 }
 
-const NGFragmentItems* LayoutBlockFlow::FragmentItems() const {
-  NOT_DESTROYED();
-  if (const NGPhysicalBoxFragment* box_fragment = CurrentFragment())
-    return box_fragment->Items();
-  return nullptr;
-}
-
 void LayoutBlockFlow::ComputeVisualOverflow(bool recompute_floats) {
   NOT_DESTROYED();
   DCHECK(!SelfNeedsLayout());

third_party/blink/renderer/core/layout/layout_block_flow.h

@@ -59,7 +59,6 @@ class LayoutMultiColumnSpannerPlaceholder;
 class LayoutRubyRun;
 class MarginInfo;
 class NGBlockBreakToken;
-class NGFragmentItems;
 class NGOffsetMapping;
 class NGPhysicalContainerFragment;
 class NGPhysicalFragment;
@@ -527,7 +526,6 @@ class CORE_EXPORT LayoutBlockFlow : public LayoutBlock {
   virtual void WillCollectInlines() { NOT_DESTROYED(); }
   virtual void SetPaintFragment(const NGBlockBreakToken*,
                                 scoped_refptr<const NGPhysicalFragment>);
-  const NGFragmentItems* FragmentItems() const;
 
 #if DCHECK_IS_ON()
   void ShowLineTreeAndMark(const InlineBox* = nullptr,

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

@@ -34,12 +34,6 @@ class NGFragmentItemTest : public NGLayoutTest,
     return To<LayoutBlockFlow>(GetLayoutObjectByElementId(id));
   }
 
-  const NGFragmentItems* GetFragmentItemsByElementId(const char* id) {
-    const auto* block_flow =
-        To<LayoutBlockFlow>(GetLayoutObjectByElementId("container"));
-    return block_flow->FragmentItems();
-  }
-
   Vector<NGInlineCursorPosition> GetLines(NGInlineCursor* cursor) {
     Vector<NGInlineCursorPosition> lines;
     for (cursor->MoveToFirstLine(); *cursor; cursor->MoveToNextLine())

third_party/blink/renderer/core/layout/ng/ng_block_node.h

@@ -20,6 +20,7 @@ class NGBlockBreakToken;
 class NGBoxFragmentBuilder;
 class NGConstraintSpace;
 class NGEarlyBreak;
+class NGFragmentItems;
 class NGLayoutResult;
 class NGPhysicalBoxFragment;
 class NGPhysicalContainerFragment;