[LayoutNG] Fix enum values to conform to kEnumName in style guide.

third_party/WebKit/Source/core/layout/ng/ng_fragment_base.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/ng_fragment_base.h"
 
 #include "core/layout/ng/ng_physical_fragment_base.h"
 
 namespace blink {
 
 LayoutUnit NGFragmentBase::InlineSize() const {
-  return writing_mode_ == HorizontalTopBottom ? physical_fragment_->Width()
-                                              : physical_fragment_->Height();
+  return writing_mode_ == kHorizontalTopBottom ? physical_fragment_->Width()
+                                               : physical_fragment_->Height();
 }
 
 LayoutUnit NGFragmentBase::BlockSize() const {
-  return writing_mode_ == HorizontalTopBottom ? physical_fragment_->Height()
-                                              : physical_fragment_->Width();
+  return writing_mode_ == kHorizontalTopBottom ? physical_fragment_->Height()
+                                               : physical_fragment_->Width();
 }
 
 LayoutUnit NGFragmentBase::InlineOverflow() const {
-  return writing_mode_ == HorizontalTopBottom
+  return writing_mode_ == kHorizontalTopBottom
              ? physical_fragment_->WidthOverflow()
              : physical_fragment_->HeightOverflow();
 }
 
 LayoutUnit NGFragmentBase::BlockOverflow() const {
-  return writing_mode_ == HorizontalTopBottom
+  return writing_mode_ == kHorizontalTopBottom
              ? physical_fragment_->HeightOverflow()
              : physical_fragment_->WidthOverflow();
 }
 
 LayoutUnit NGFragmentBase::InlineOffset() const {
-  return writing_mode_ == HorizontalTopBottom ? physical_fragment_->LeftOffset()
-                                              : physical_fragment_->TopOffset();
+  return writing_mode_ == kHorizontalTopBottom
+             ? physical_fragment_->LeftOffset()
+             : physical_fragment_->TopOffset();
 }
 
 LayoutUnit NGFragmentBase::BlockOffset() const {
-  return writing_mode_ == HorizontalTopBottom
+  return writing_mode_ == kHorizontalTopBottom
              ? physical_fragment_->TopOffset()
              : physical_fragment_->LeftOffset();
 }
 
 NGPhysicalFragmentBase::NGFragmentType NGFragmentBase::Type() const {
   return physical_fragment_->Type();
 }
 
 DEFINE_TRACE(NGFragmentBase) {
   visitor->trace(physical_fragment_);
 }
 
 }  // namespace blink