views: Add OnEnabledChanged() method to View class.

views/controls/progress_bar.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 "views/controls/progress_bar.h"
 
 #include <string>
 
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
+#include "third_party/skia/include/effects/SkBlurMaskFilter.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
-#include "third_party/skia/include/effects/SkBlurMaskFilter.h"
 #include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/gfx/canvas_skia.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/font.h"
 #include "ui/gfx/insets.h"
 #include "views/background.h"
 #include "views/border.h"
 #include "views/painter.h"
 
 namespace {
@@ skipping 273 matching lines @@
 }
 
 bool ProgressBar::GetTooltipText(const gfx::Point& p, std::wstring* tooltip) {
   DCHECK(tooltip);
   if (tooltip == NULL)
     return false;
   tooltip->assign(UTF16ToWideHack(tooltip_text_));
   return !tooltip_text_.empty();
 }
 
-void ProgressBar::SetEnabled(bool enabled) {
-  if (enabled == enabled_)
-    return;
-  View::SetEnabled(enabled);
+void ProgressBar::OnEnabledChanged() {
+  View::OnEnabledChanged();
   // TODO(denisromanov): Need to switch progress bar color here?
 }
 
 void ProgressBar::GetAccessibleState(ui::AccessibleViewState* state) {
   state->role = ui::AccessibilityTypes::ROLE_PROGRESSBAR;
   state->state = ui::AccessibilityTypes::STATE_READONLY;
 }
 
 }  // namespace views