Use ScopedRTLFlipCanvas more pervasively for RTL flipping.

ui/views/style/mac/combobox_background_mac.cc

 // Copyright 2016 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/style/mac/combobox_background_mac.h"
 
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/scoped_canvas.h"
 #include "ui/native_theme/native_theme_mac.h"
 #include "ui/views/view.h"
 
 using ui::NativeThemeMac;
 
 namespace views {
 
 ComboboxBackgroundMac::ComboboxBackgroundMac(int container_width)
     : container_width_(container_width) {}
 
 ComboboxBackgroundMac::~ComboboxBackgroundMac() {}
 
 void ComboboxBackgroundMac::Paint(gfx::Canvas* canvas, View* view) const {
   gfx::RectF bounds(view->GetLocalBounds());
-  gfx::ScopedRTLFlipCanvas scoped_canvas(canvas, view->bounds());
+  gfx::ScopedRTLFlipCanvas scoped_canvas(canvas, view->width());
 
   // Inset the left side far enough to draw only the arrow button, and inset the
   // other three sides by half a pixel so the edge of the background doesn't
   // paint outside the border.
   // Disabled comboboxes do not have a separate color for the arrow container;
   // instead, the entire combobox is drawn with the disabled background shader.
   if (view->enabled()) {
     bounds.Inset(bounds.width() - container_width_, 0.5, 0.5, 0.5);
   } else {
     bounds.Inset(0.5, 0.5);
@@ skipping 25 matching lines @@
   else
     fill_rect.setRectXY(gfx::RectFToSkRect(bounds), curve.fX, curve.fY);
 
   SkPath path;
   path.addRRect(fill_rect);
 
   canvas->DrawPath(path, paint);
 }
 
 }  // namespace views