views: Convert IsEnabled() to just enabled() since it's just a simple accessor.

ui/views/controls/button/text_button.cc

 // Copyright (c) 2011 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 "ui/views/controls/button/text_button.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "grit/ui_resources.h"
@@ skipping 393 matching lines @@
 
 void TextButtonBase::OnPaint(gfx::Canvas* canvas) {
   PaintButton(canvas, PB_NORMAL);
 }
 
 const ui::Animation* TextButtonBase::GetAnimation() const {
   return hover_animation_.get();
 }
 
 void TextButtonBase::UpdateColor() {
-  color_ = View::IsEnabled() ? color_enabled_ : color_disabled_;
+  color_ = enabled() ? color_enabled_ : color_disabled_;
 }
 
 void TextButtonBase::UpdateTextSize() {
   CalculateTextSize(&text_size_, width());
   max_text_size_.SetSize(std::max(max_text_size_.width(), text_size_.width()),
                          std::max(max_text_size_.height(),
                                   text_size_.height()));
   PreferredSizeChanged();
 }
 
@@ skipping 426 matching lines @@
 #endif
 }
 
 void NativeTextButton::GetExtraParams(
     gfx::NativeTheme::ExtraParams* params) const {
   TextButton::GetExtraParams(params);
   params->button.has_border = true;
 }
 
 }  // namespace views