[LayoutNG] Add NGLineBoxFragment

third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc
index 230e04d1794f874e9355ec7aebb006729d3a2a04..5528d7ac0e5aa0f17951e0f8d9a71d9fac9ac3dd 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_physical_fragment.cc
@@ -6,27 +6,36 @@
 
 #include "core/layout/ng/ng_break_token.h"
 #include "core/layout/ng/ng_physical_box_fragment.h"
+#include "core/layout/ng/ng_physical_line_box_fragment.h"
 #include "core/layout/ng/ng_physical_text_fragment.h"
 
 namespace blink {
 
 NGPhysicalFragment::NGPhysicalFragment(LayoutObject* layout_object,
                                        NGPhysicalSize size,
-                                       NGPhysicalSize overflow,
                                        NGFragmentType type,
                                        RefPtr<NGBreakToken> break_token)
     : layout_object_(layout_object),
       size_(size),
-      overflow_(overflow),
       break_token_(std::move(break_token)),
       type_(type),
       is_placed_(false) {}
 
 void NGPhysicalFragment::destroy() const {
-  if (Type() == kFragmentText)
-    delete static_cast<const NGPhysicalTextFragment*>(this);
-  else
-    delete static_cast<const NGPhysicalBoxFragment*>(this);
+  switch (Type()) {
+    case kFragmentBox:
+      delete static_cast<const NGPhysicalBoxFragment*>(this);
+      break;
+    case kFragmentText:
+      delete static_cast<const NGPhysicalTextFragment*>(this);
+      break;
+    case kFragmentLineBox:
+      delete static_cast<const NGPhysicalLineBoxFragment*>(this);
+      break;
+    default:
+      NOTREACHED();
+      break;
+  }
 }
 
 const ComputedStyle& NGPhysicalFragment::Style() const {