[LayoutNG] Implement 'text-align-last'

third_party/WebKit/Source/core/layout/ng/inline/ng_line_breaker_test.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/ng_base_layout_algorithm_test.h"
 
 #include "core/layout/ng/inline/ng_inline_layout_algorithm.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "core/layout/ng/inline/ng_line_breaker.h"
 #include "core/layout/ng/layout_ng_block_flow.h"
@@ skipping 20 matching lines @@
     if (!node.IsPrepareLayoutFinished())
       node.PrepareLayout();
 
     RefPtr<NGConstraintSpace> space =
         NGConstraintSpaceBuilder(NGWritingMode::kHorizontalTopBottom)
             .SetAvailableSize({available_width, NGSizeIndefinite})
             .ToConstraintSpace(NGWritingMode::kHorizontalTopBottom);
     NGLineBreaker line_breaker(node, space.Get());
     NGInlineLayoutAlgorithm algorithm(node, space.Get());
     Vector<NGInlineItemResults> lines;
-    while (true) {
-      NGInlineItemResults item_results;
-      line_breaker.NextLine(&item_results, &algorithm);
-      if (item_results.IsEmpty())
-        break;
-      lines.push_back(item_results);
-    }
+    NGLineInfo line_info;
+    while (line_breaker.NextLine(&line_info, &algorithm))
+      lines.push_back(std::move(line_info.Results()));
     return lines;
   }
 };
 
 namespace {
 
 String ToString(NGInlineItemResults line, NGInlineNode node) {
   StringBuilder builder;
   for (const auto& item_result : line) {
     builder.Append(node.Text(item_result.start_offset, item_result.end_offset));
@@ skipping 203 matching lines @@
   EXPECT_EQ("789", ToString(lines[1], node));
 
   lines = BreakLines(node, LayoutUnit(20));
   EXPECT_EQ(2u, lines.size());
   EXPECT_EQ("123456", ToString(lines[0], node));
   EXPECT_EQ("789", ToString(lines[1], node));
 }
 
 }  // namespace
 }  // namespace blink