[LayoutNG] Remove all mentions of NGBox and NGInlineBox.

It's called NGBlockNode and NGInlineNode now.

Also removed an old TODO about common base class for NGBlockNode and
NGInlineNode. They do have a common base class now.

Review-Url: https://codereview.chromium.org/2530083003
Cr-Commit-Position: refs/heads/master@{#434630}

third_party/WebKit/Source/core/layout/ng/ng_block_node.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NGBox_h
-#define NGBox_h
+#ifndef NGBlockNode_h
+#define NGBlockNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_input_node.h"
@@ -91,4 +91,4 @@ DEFINE_TYPE_CASTS(NGBlockNode,
 
 }  // namespace blink
 
-#endif  // NGBox_h
+#endif  // NGBlockNode

third_party/WebKit/Source/core/layout/ng/ng_inline_node.h

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef NGInlineBox_h
-#define NGInlineBox_h
+#ifndef NGInlineNode_h
+#define NGInlineNode_h
 
 #include "core/CoreExport.h"
 #include "core/layout/ng/ng_layout_input_node.h"
@@ -29,7 +29,6 @@ class NGPhysicalFragment;
 struct MinAndMaxContentSizes;
 
 // Represents an inline node to be laid out.
-// TODO(layout-dev): Make this and NGBlockNode inherit from a common class.
 class CORE_EXPORT NGInlineNode : public NGLayoutInputNode {
  public:
   NGInlineNode(LayoutObject* start_inline, ComputedStyle* block_style);
@@ -129,4 +128,4 @@ DEFINE_TYPE_CASTS(NGInlineNode,
 
 }  // namespace blink
 
-#endif  // NGInlineBox_h
+#endif  // NGInlineNode_h

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

@@ -39,9 +39,9 @@ class NGInlineNodeForTest : public NGInlineNode {
   void SegmentText() { NGInlineNode::SegmentText(); }
 };
 
-class NGInlineBoxTest : public ::testing::Test {};
+class NGInlineNodeTest : public ::testing::Test {};
 
-TEST_F(NGInlineBoxTest, SegmentASCII) {
+TEST_F(NGInlineNodeTest, SegmentASCII) {
   RefPtr<ComputedStyle> style = ComputedStyle::create();
   NGInlineNodeForTest* box = new NGInlineNodeForTest(style.get());
   box->AppendText("Hello");
@@ -53,7 +53,7 @@ TEST_F(NGInlineBoxTest, SegmentASCII) {
   EXPECT_EQ(LTR, item.Direction());
 }
 
-TEST_F(NGInlineBoxTest, SegmentHebrew) {
+TEST_F(NGInlineNodeTest, SegmentHebrew) {
   RefPtr<ComputedStyle> style = ComputedStyle::create();
   NGInlineNodeForTest* box = new NGInlineNodeForTest(style.get());
   box->AppendText(u"\u05E2\u05D1\u05E8\u05D9\u05EA");
@@ -65,7 +65,7 @@ TEST_F(NGInlineBoxTest, SegmentHebrew) {
   EXPECT_EQ(RTL, item.Direction());
 }
 
-TEST_F(NGInlineBoxTest, SegmentSplit1To2) {
+TEST_F(NGInlineNodeTest, SegmentSplit1To2) {
   RefPtr<ComputedStyle> style = ComputedStyle::create();
   NGInlineNodeForTest* box = new NGInlineNodeForTest(style.get());
   box->AppendText(u"Hello \u05E2\u05D1\u05E8\u05D9\u05EA");
@@ -81,7 +81,7 @@ TEST_F(NGInlineBoxTest, SegmentSplit1To2) {
   EXPECT_EQ(RTL, item.Direction());
 }
 
-TEST_F(NGInlineBoxTest, SegmentSplit3To4) {
+TEST_F(NGInlineNodeTest, SegmentSplit3To4) {
   RefPtr<ComputedStyle> style = ComputedStyle::create();
   NGInlineNodeForTest* box = new NGInlineNodeForTest(style.get());
   box->AppendText("Hel");

third_party/WebKit/Source/core/layout/ng/ng_layout_input_node.h

@@ -50,4 +50,4 @@ class CORE_EXPORT NGLayoutInputNode
 
 }  // namespace blink
 
-#endif  // NGInlineBox_h
+#endif  // NGLayoutInputNode_h