Make TextIndentType an enum class.

third_party/WebKit/Source/core/animation/CSSTextIndentInterpolationType.cpp

 // 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/animation/CSSTextIndentInterpolationType.h"
 
 #include <memory>
 #include "core/animation/LengthInterpolationFunctions.h"
 #include "core/css/CSSIdentifierValue.h"
 #include "core/css/CSSPrimitiveValue.h"
@@ skipping 147 matching lines @@
   InterpolationValue length = nullptr;
   TextIndentLine line = ComputedStyle::InitialTextIndentLine();
   TextIndentType type = ComputedStyle::InitialTextIndentType();
 
   for (const auto& item : ToCSSValueList(value)) {
     if (item->IsIdentifierValue() &&
         ToCSSIdentifierValue(*item).GetValueID() == CSSValueEachLine)
       line = TextIndentLine::kEachLine;
     else if (item->IsIdentifierValue() &&
              ToCSSIdentifierValue(*item).GetValueID() == CSSValueHanging)
-      type = kTextIndentHanging;
+      type = TextIndentType::kHanging;
     else
       length = LengthInterpolationFunctions::MaybeConvertCSSValue(*item);
   }
   DCHECK(length);
 
   return InterpolationValue(
       std::move(length.interpolable_value),
       CSSTextIndentNonInterpolableValue::Create(
           std::move(length.non_interpolable_value), IndentMode(line, type)));
 }
@@ skipping 69 matching lines @@
       interpolable_value,
       css_text_indent_non_interpolable_value.LengthNonInterpolableValue(),
       state.CssToLengthConversionData(), kValueRangeAll));
 
   const IndentMode& mode = css_text_indent_non_interpolable_value.Mode();
   style.SetTextIndentLine(mode.line);
   style.SetTextIndentType(mode.type);
 }
 
 }  // namespace blink