Use ScopedRTLFlipCanvas more pervasively for RTL flipping.

ui/views/view.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.
 
 #define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
 
 #include "ui/views/view.h"
 
 #include <algorithm>
 #include <cmath>
@@ skipping 823 matching lines @@
     transform_from_parent.PreconcatTransform(GetTransform());
     transform_recorder.Transform(transform_from_parent);
   }
 
   // Note that the cache is not aware of the offset of the view
   // relative to the parent since painting is always done relative to
   // the top left of the individual view.
   if (is_invalidated || !paint_cache_.UseCache(context, size())) {
     ui::PaintRecorder recorder(context, size(), &paint_cache_);
     gfx::Canvas* canvas = recorder.canvas();
-
-    // If the View we are about to paint requested the canvas to be flipped, we
-    // should change the transform appropriately.
-    // The canvas mirroring is undone once the View is done painting so that we
-    // don't pass the canvas with the mirrored transform to Views that didn't
-    // request the canvas to be flipped.
-    if (FlipCanvasOnPaintForRTLUI()) {
-      canvas->Translate(gfx::Vector2d(width(), 0));
-      canvas->Scale(-1, 1);
-    }
+    gfx::ScopedRTLFlipCanvas scoped_canvas(canvas, width(),
+                                           flip_canvas_on_paint_for_rtl_ui_);
 
     // Delegate painting the contents of the View to the virtual OnPaint method.
     OnPaint(canvas);
   }
 
   // View::Paint() recursion over the subtree.
   PaintChildren(context);
 }
 
 void View::set_background(Background* b) {
@@ skipping 1562 matching lines @@
   // Message the RootView to do the drag and drop. That way if we're removed
   // the RootView can detect it and avoid calling us back.
   gfx::Point widget_location(event.location());
   ConvertPointToWidget(this, &widget_location);
   widget->RunShellDrag(this, data, widget_location, drag_operations, source);
   // WARNING: we may have been deleted.
   return true;
 }
 
 }  // namespace views