[LayoutNG] Implement 'text-align-last'

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_item_result.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_inline_item_result.h"
 
+#include "core/layout/ng/inline/ng_inline_node.h"
+
 namespace blink {
 
 NGInlineItemResult::NGInlineItemResult() {}
 
 NGInlineItemResult::NGInlineItemResult(unsigned index,
                                        unsigned start,
                                        unsigned end)
     : item_index(index),
       start_offset(start),
       end_offset(end),
       no_break_opportunities_inside(false),
       prohibit_break_after(false) {}
 
+void NGLineInfo::SetLineStyle(const NGInlineNode& node, bool is_first_line) {
+  LayoutObject* layout_object = node.GetLayoutObject();
+  if (is_first_line &&
+      layout_object->GetDocument().GetStyleEngine().UsesFirstLineRules()) {
+    is_first_line_ = true;
+    line_style_ = layout_object->FirstLineStyle();
+    return;
+  }
+  is_first_line_ = false;
+  line_style_ = layout_object->Style();
+}
+
 }  // namespace blink