[LayoutNG] Initial support for the 'vertical-align' property

third_party/WebKit/Source/core/layout/ng/inline/ng_line_box_fragment_builder.cc

 // Copyright 2017 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/inline/ng_line_box_fragment_builder.h"
 
 #include "core/layout/ng/geometry/ng_logical_size.h"
 #include "core/layout/ng/inline/ng_inline_break_token.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "core/layout/ng/inline/ng_physical_line_box_fragment.h"
@@ skipping 26 matching lines @@
   offsets_.push_back(child_offset);
 
   return *this;
 }
 
 void NGLineBoxFragmentBuilder::MoveChildrenInBlockDirection(LayoutUnit delta) {
   for (auto& offset : offsets_)
     offset.block_offset += delta;
 }
 
+void NGLineBoxFragmentBuilder::MoveChildrenInBlockDirection(LayoutUnit delta,
+                                                            unsigned start,
+                                                            unsigned end) {
+  for (unsigned index = start; index < end; index++)
+    offsets_[index].block_offset += delta;
+}
+
 void NGLineBoxFragmentBuilder::UniteMetrics(
     const NGLineHeightMetrics& metrics) {
   metrics_.Unite(metrics);
 }
 
 void NGLineBoxFragmentBuilder::SetBreakToken(
     RefPtr<NGInlineBreakToken> break_token) {
   break_token_ = std::move(break_token);
 }
 
@@ skipping 13 matching lines @@
         writing_mode, direction_, physical_size, child->Size()));
   }
 
   return AdoptRef(new NGPhysicalLineBoxFragment(
       physical_size, children_, metrics_,
       break_token_ ? std::move(break_token_)
                    : NGInlineBreakToken::Create(node_)));
 }
 
 }  // namespace blink