Make ETextSecurity an enum class.

third_party/WebKit/Source/core/layout/LayoutTextControlSingleLine.cpp

 /**
  * Copyright (C) 2006, 2007, 2010 Apple Inc. All rights reserved.
  *           (C) 2008 Torch Mobile Inc. All rights reserved.
  *               (http://www.torchmobile.com/)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 315 matching lines @@
   // TODO(tkent): This should be done during layout.
   if (logical_height.IsPercentOrCalc() ||
       (logical_height.IsFixed() &&
        logical_height.GetFloatValue() > computed_line_height))
     text_block_style->SetLineHeight(ComputedStyle::InitialLineHeight());
 
   text_block_style->SetDisplay(EDisplay::kBlock);
   text_block_style->SetUnique();
 
   if (InputElement()->ShouldRevealPassword())
-    text_block_style->SetTextSecurity(TSNONE);
+    text_block_style->SetTextSecurity(ETextSecurity::kNone);
 
   text_block_style->SetOverflowX(EOverflow::kScroll);
   // overflow-y:visible doesn't work because overflow-x:scroll makes a layer.
   text_block_style->SetOverflowY(EOverflow::kScroll);
   RefPtr<ComputedStyle> no_scrollbar_style = ComputedStyle::Create();
   no_scrollbar_style->SetStyleType(kPseudoIdScrollbar);
   no_scrollbar_style->SetDisplay(EDisplay::kNone);
   text_block_style->AddCachedPseudoStyle(no_scrollbar_style);
   text_block_style->SetHasPseudoStyle(kPseudoIdScrollbar);
 
@@ skipping 61 matching lines @@
   // If the INPUT content height is smaller than the font height, the
   // inner-editor element overflows the INPUT box intentionally, however it
   // shouldn't affect outside of the INPUT box.  So we ignore child overflow.
 }
 
 HTMLInputElement* LayoutTextControlSingleLine::InputElement() const {
   return toHTMLInputElement(GetNode());
 }
 
 }  // namespace blink