ui: Clean up naming of paint-related identifiers

ui/views/controls/button/radio_button.cc

 // Copyright (c) 2012 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/radio_button.h"
 
 #include "base/logging.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event_utils.h"
@@ skipping 130 matching lines @@
           RadioButton* peer = static_cast<RadioButton*>(*i);
           peer->SetChecked(false);
         }
       }
     }
   }
   Checkbox::SetChecked(checked);
 }
 
 void RadioButton::PaintFocusRing(gfx::Canvas* canvas,
-                                 const cc::PaintFlags& paint) {
+                                 const cc::PaintFlags& flags) {
   canvas->DrawCircle(gfx::RectF(image()->bounds()).CenterPoint(),
-                     image()->width() / 2, paint);
+                     image()->width() / 2, flags);
 }
 
 const gfx::VectorIcon& RadioButton::GetVectorIcon() const {
   return checked() ? kRadioButtonActiveIcon : kRadioButtonNormalIcon;
 }
 
 }  // namespace views