[ng_layout] Rename NGFragmentBase,NGFragment,NGPhysicalFragment

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

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "core/layout/ng/ng_physical_fragment.h"
+#include "core/layout/ng/ng_physical_box_fragment.h"
 
 namespace blink {
 
-NGPhysicalFragment::NGPhysicalFragment(
+NGPhysicalBoxFragment::NGPhysicalBoxFragment(
     NGPhysicalSize size,
     NGPhysicalSize overflow,
-    HeapVector<Member<const NGPhysicalFragmentBase>>& children,
+    HeapVector<Member<const NGPhysicalFragment>>& children,
     HeapLinkedHashSet<WeakMember<NGBlockNode>>& out_of_flow_descendants,
     Vector<NGStaticPosition>& out_of_flow_positions,
     NGMarginStrut margin_strut)
-    : NGPhysicalFragmentBase(size,
-                             overflow,
-                             kFragmentBox,
-                             out_of_flow_descendants,
-                             out_of_flow_positions),
+    : NGPhysicalFragment(size,
+                         overflow,
+                         kFragmentBox,
+                         out_of_flow_descendants,
+                         out_of_flow_positions),
       margin_strut_(margin_strut) {
   children_.swap(children);
 }
 
-DEFINE_TRACE_AFTER_DISPATCH(NGPhysicalFragment) {
+DEFINE_TRACE_AFTER_DISPATCH(NGPhysicalBoxFragment) {
   visitor->trace(children_);
-  NGPhysicalFragmentBase::traceAfterDispatch(visitor);
+  NGPhysicalFragment::traceAfterDispatch(visitor);
 }
 
 }  // namespace blink