Move NG floats utility methods to the separate file

third_party/WebKit/Source/core/layout/ng/ng_physical_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_break_token.h"
 #include "core/layout/ng/ng_physical_box_fragment.h"
 #include "core/layout/ng/ng_physical_text_fragment.h"
 
@@ skipping 16 matching lines @@
     delete static_cast<const NGPhysicalTextFragment*>(this);
   else
     delete static_cast<const NGPhysicalBoxFragment*>(this);
 }
 
 const ComputedStyle& NGPhysicalFragment::Style() const {
   DCHECK(layout_object_);
   return layout_object_->styleRef();
 }
 
+String NGPhysicalFragment::ToString() const {
+  return String::format("Type: '%d' Size: '%s' Offset: '%s' Placed: '%d'",
+                        Type(), Size().ToString().ascii().data(),
+                        Offset().ToString().ascii().data(), IsPlaced());
+}
+
 }  // namespace blink