[LayoutNG] Add "Control" NGInlineItemType for newlines and tabs

third_party/WebKit/Source/core/layout/ng/inline/ng_inline_items_builder_test.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/inline/ng_inline_items_builder.h"
 
 #include "core/layout/LayoutInline.h"
 #include "core/layout/ng/inline/ng_inline_node.h"
 #include "core/style/ComputedStyle.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 227 matching lines @@
   EXPECT_EQ(nullptr, items_[0].Style());
   EXPECT_EQ(style_.Get(), items_[1].Style());
   EXPECT_EQ(nullptr, items_[2].Style());
 }
 
 TEST_F(NGInlineItemsBuilderTest, AppendEmptyString) {
   EXPECT_EQ("", TestAppend(""));
   EXPECT_EQ(0u, items_.size());
 }
 
+TEST_F(NGInlineItemsBuilderTest, NewLines) {
+  SetWhiteSpace(EWhiteSpace::kPre);
+  EXPECT_EQ("apple\norange\ngrape\n", TestAppend("apple\norange\ngrape\n"));
+  EXPECT_EQ(6u, items_.size());
+  EXPECT_EQ(NGInlineItem::kText, items_[0].Type());
+  EXPECT_EQ(NGInlineItem::kControl, items_[1].Type());
+  EXPECT_EQ(NGInlineItem::kText, items_[2].Type());
+  EXPECT_EQ(NGInlineItem::kControl, items_[3].Type());
+  EXPECT_EQ(NGInlineItem::kText, items_[4].Type());
+  EXPECT_EQ(NGInlineItem::kControl, items_[5].Type());
+}
+
 TEST_F(NGInlineItemsBuilderTest, Empty) {
   Vector<NGInlineItem> items;
   NGInlineItemsBuilder builder(&items);
   RefPtr<ComputedStyle> block_style(ComputedStyle::Create());
   builder.EnterBlock(block_style.Get());
   builder.ExitBlock();
 
   EXPECT_EQ("", builder.ToString());
 }
 
@@ skipping 68 matching lines @@
                    u"\u2068\u202E"
                    u"\u05E2\u05D1\u05E8\u05D9\u05EA"
                    u"\u202C\u2069"
                    u" World"),
             builder.ToString());
 }
 
 }  // namespace
 
 }  // namespace blink