[LayoutNG] Reset additional members inside NGLineBoxFragmentBuilder::Reset

This was found when I was debugging failures within:
https://chromium-review.googlesource.com/c/chromium/src/+/1553646

Essentially we didn't clear all the members within the Reset call.
The initial bug I found meant that OOF-positioned candidates appeared
multiple times within a layout result.

Bug: 635619
Change-Id: I26acdad2c85045ce155449379cce68c447b39d99
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1559930
Commit-Queue: Ian Kilpatrick <ikilpatrick@chromium.org>
Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Reviewed-by: Koji Ishii <kojii@chromium.org>
Cr-Commit-Position: refs/heads/master@{#649155}

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

@@ -15,11 +15,22 @@
 namespace blink {
 
 void NGLineBoxFragmentBuilder::Reset() {
-  children_.resize(0);
-  offsets_.resize(0);
-  line_box_type_ = NGPhysicalLineBoxFragment::kNormalLineBox;
-  metrics_ = NGLineHeightMetrics();
+  children_.Shrink(0);
+  offsets_.Shrink(0);
+  child_break_tokens_.Shrink(0);
+  inline_break_tokens_.Shrink(0);
+  oof_positioned_candidates_.Shrink(0);
+
   size_.inline_size = LayoutUnit();
+  metrics_ = NGLineHeightMetrics();
+  line_box_type_ = NGPhysicalLineBoxFragment::kNormalLineBox;
+
+  has_last_resort_break_ = false;
+  has_floating_descendants_ = false;
+  has_orthogonal_flow_roots_ = false;
+  has_child_that_depends_on_percentage_block_size_ = false;
+  has_block_fragmentation_ = false;
+  may_have_descendant_above_block_start_ = false;
 }
 
 void NGLineBoxFragmentBuilder::SetIsEmptyLineBox() {

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

@@ -239,11 +239,10 @@ class CORE_EXPORT NGContainerFragmentBuilder : public NGFragmentBuilder {
 
   NGFloatTypes adjoining_floats_ = kFloatTypeNone;
 
-  bool has_last_resort_break_ = false;
-
   bool is_pushed_by_floats_ = false;
   bool is_old_layout_root_ = false;
 
+  bool has_last_resort_break_ = false;
   bool has_floating_descendants_ = false;
   bool has_orthogonal_flow_roots_ = false;
   bool has_child_that_depends_on_percentage_block_size_ = false;