[Mac] Fix Omnibox decoration accessibility views in RTL

chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/location_bar/autocomplete_text_field_cell.h"
 
 #include <stddef.h>
 
 #include "base/logging.h"
 #include "base/mac/foundation_util.h"
@@ skipping 141 matching lines @@
 
   // Reverse the right-hand decorations so that overall everything is
   // sorted left to right.
   std::reverse(decorations->begin() + leading_count, decorations->end());
   std::reverse(decoration_frames->begin() + leading_count,
                decoration_frames->end());
 
   // Flip all frames in RTL.
   if (cocoa_l10n_util::ShouldDoExperimentalRTLLayout()) {
     for (NSRect& rect : *decoration_frames)
-      rect.origin.x = NSWidth(frame) - NSWidth(rect) - NSMinX(rect);
-    text_frame->origin.x =
-        NSWidth(frame) - NSWidth(*text_frame) - NSMinX(*text_frame);
+      rect.origin.x =
+          NSMinX(frame) + NSMaxX(frame) - NSWidth(rect) - NSMinX(rect);
+    text_frame->origin.x = NSMinX(frame) + NSMaxX(frame) -
+                           NSWidth(*text_frame) - NSMinX(*text_frame);
     leading_count = decorations->size() - leading_count;
   }
 
   return leading_count;
 }
 
 }  // namespace
 
 @implementation AutocompleteTextFieldCell
 
@@ skipping 570 matching lines @@
 
 @end
 
 @implementation AutocompleteTextFieldCell (TestingAPI)
 
 - (const std::vector<LocationBarDecoration*>&)mouseTrackingDecorations {
   return mouseTrackingDecorations_;
 }
 
 @end