Update some comments on <textarea> layout

This CL has no behavior changes.

No-Try: true
Change-Id: Id12d1876e22f8c40c3998573fa8cef36b06ab012
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2467038Reviewed-by: Christian Biesinger <cbiesinger@chromium.org>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#817298}

third_party/blink/renderer/core/layout/layout_box.cc

@@ -136,10 +136,11 @@ namespace {
 
 LayoutUnit TextAreaIntrinsicInlineSize(const HTMLTextAreaElement& textarea,
                                        const LayoutBox& box) {
-  // <textarea>'s intrinsic inilne-size always contains the scrollbar thickness
-  // regardless of actual existence of a scrollbar. If a scrollbar exists, its
-  // thickness is not added.  See NGBlockLayoutAlgorithm::ComputeMinMaxSizes()
-  // and LayoutBlock::ComputeIntrinsicLogicalWidths().
+  // <textarea>'s intrinsic inline-size always contains the scrollbar thickness
+  // regardless of actual existence of a scrollbar.
+  //
+  // See |NGBlockLayoutAlgorithm::ComputeMinMaxSizes()| and |LayoutBlock::
+  // ComputeIntrinsicLogicalWidths()|.
   return LayoutUnit(ceilf(LayoutTextControl::GetAvgCharWidth(box.StyleRef()) *
                           textarea.cols())) +
          LayoutTextControl::ScrollbarThickness(box);
@@ -172,7 +173,7 @@ LayoutUnit TextFieldIntrinsicInlineSize(const HTMLInputElement& input,
             spin_button ? spin_button->GetLayoutBox() : nullptr) {
       result += spin_box->BorderAndPaddingLogicalWidth();
       // Since the width of spin_box is not calculated yet,
-      // spin_layout_object->LogicalWidth() returns 0. Use the computed logical
+      // spin_box->LogicalWidth() returns 0. Use the computed logical
       // width instead.
       result += spin_box->StyleRef().LogicalWidth().Value();
     }

third_party/blink/renderer/core/layout/ng/layout_ng_text_control_multi_line.h

@@ -9,7 +9,7 @@
 
 namespace blink {
 
-// LayoutNGTextControlSingleLine is a LayoutObject for <textarea>.
+// LayoutNGTextControlMultiLine is a LayoutObject for <textarea>.
 class LayoutNGTextControlMultiLine final : public LayoutNGBlockFlow {
  public:
   explicit LayoutNGTextControlMultiLine(Element* element);