[LayoutNG] Add NGLineBoxFragment

third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc

Index: third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc
diff --git a/third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc b/third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc
index 6b10956bd53c8a565d43ff5ab6be84127f5d48a0..86c4d0d90998f910a882a9dc511531ea305e392e 100644
--- a/third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc
+++ b/third_party/WebKit/Source/core/layout/ng/ng_text_layout_algorithm_test.cc
@@ -7,6 +7,7 @@
 #include "core/dom/TagCollection.h"
 #include "core/layout/line/InlineTextBox.h"
 #include "core/layout/ng/ng_inline_node.h"
+#include "core/layout/ng/ng_physical_linebox_fragment.h"
 #include "core/layout/ng/ng_physical_text_fragment.h"
 #include "platform/geometry/LayoutPoint.h"
 #include "platform/geometry/LayoutRect.h"
@@ -56,8 +57,15 @@ TEST_F(NGTextLayoutAlgorithmTest, TextFloatsAroundFloatsBefore) {
       toNGPhysicalBoxFragment(html_fragment->Children()[0].get());
   auto* container_fragment =
       toNGPhysicalBoxFragment(body_fragment->Children()[0].get());
-  auto* text_fragments_wrapper =
+  auto* linebox_fragments_wrapper =
       toNGPhysicalBoxFragment(container_fragment->Children()[0].get());
+  Vector<NGPhysicalTextFragment*> text_fragments;
+  for (const auto& child : linebox_fragments_wrapper->Children()) {
+    auto* linebox = toNGPhysicalLineboxFragment(child.get());
+    EXPECT_EQ(1u, linebox->Children().size());
+    for (const auto& text : linebox->Children())
+      text_fragments.push_back(toNGPhysicalTextFragment(text.get()));
+  }
 
   LayoutText* layout_text =
       toLayoutText(getLayoutObjectByElementId("text")->slowFirstChild());
@@ -65,10 +73,9 @@ TEST_F(NGTextLayoutAlgorithmTest, TextFloatsAroundFloatsBefore) {
 
   // TODO(glebl): Should have only 3 text fragments. For some reason we have a
   // left over fragment with text == "dog".
-  ASSERT_EQ(4UL, text_fragments_wrapper->Children().size());
+  ASSERT_EQ(4UL, text_fragments.size());
 
-  auto* text_fragment1 =
-      toNGPhysicalTextFragment(text_fragments_wrapper->Children()[0].get());
+  auto* text_fragment1 = text_fragments[0];
   auto* text_node = text_fragment1->Node();
   // 40 = #left-float1' width 30 + #left-float2 10
   EXPECT_EQ(LayoutUnit(40), text_fragment1->LeftOffset());
@@ -77,8 +84,7 @@ TEST_F(NGTextLayoutAlgorithmTest, TextFloatsAroundFloatsBefore) {
   InlineTextBox* inline_text_box1 = layout_text->firstTextBox();
   EXPECT_EQ(LayoutUnit(40), inline_text_box1->x());
 
-  auto* text_fragment2 =
-      toNGPhysicalTextFragment(text_fragments_wrapper->Children()[1].get());
+  auto* text_fragment2 = text_fragments[1];
   // 40 = #left-float1' width 30
   EXPECT_EQ(LayoutUnit(30), text_fragment2->LeftOffset());
   EXPECT_EQ("brown fox jumps over",
@@ -87,8 +93,7 @@ TEST_F(NGTextLayoutAlgorithmTest, TextFloatsAroundFloatsBefore) {
   InlineTextBox* inline_text_box2 = inline_text_box1->nextTextBox();
   EXPECT_EQ(LayoutUnit(30), inline_text_box2->x());
 
-  auto* text_fragment3 =
-      toNGPhysicalTextFragment(text_fragments_wrapper->Children()[2].get());
+  auto* text_fragment3 = text_fragments[2];
   EXPECT_EQ(LayoutUnit(), text_fragment3->LeftOffset());
   EXPECT_EQ("jumps over the lazy dog",
             text_node->Text(text_fragment3->StartOffset(),