Use ScopedRTLFlipCanvas more pervasively for RTL flipping.

ui/views/controls/combobox/combobox.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/combobox/combobox.h"
 
 #include <stddef.h>
 
 #include <utility>
 
@@ skipping 751 matching lines @@
   arrow_bounds =
       PositionArrowWithinContainer(arrow_bounds, ArrowSize(), style_);
   AdjustBoundsForRTLUI(&arrow_bounds);
 
   canvas->DrawImageInt(arrow_image_, arrow_bounds.x(), arrow_bounds.y());
 }
 
 void Combobox::PaintButtons(gfx::Canvas* canvas) {
   DCHECK(style_ == STYLE_ACTION);
 
-  gfx::ScopedRTLFlipCanvas scoped_canvas(canvas, bounds());
+  gfx::ScopedRTLFlipCanvas scoped_canvas(canvas, width());
 
   bool focused = HasFocus();
   const std::vector<const gfx::ImageSkia*>& arrow_button_images =
       menu_button_images_[focused][
           arrow_button_->state() == Button::STATE_HOVERED ?
           Button::STATE_NORMAL : arrow_button_->state()];
 
   int text_button_hover_alpha =
       text_button_->state() == Button::STATE_PRESSED ? 0 :
       static_cast<int>(static_cast<TransparentButton*>(text_button_)->
@@ skipping 122 matching lines @@
 }
 
 int Combobox::GetArrowContainerWidth() const {
   int padding = style_ == STYLE_NORMAL
                     ? PlatformStyle::kComboboxNormalArrowPadding * 2
                     : kActionLeftPadding + kActionRightPadding;
   return ArrowSize().width() + padding;
 }
 
 }  // namespace views