[Mac] Make bubble arrow location/position RTL-aware

chrome/browser/ui/cocoa/content_settings/content_setting_bubble_cocoa.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/content_settings/content_setting_bubble_cocoa.h"
 
 #include <stddef.h>
 
 #include "base/command_line.h"
 #include "base/logging.h"
@@ skipping 773 matching lines @@
   frame.size.width += size.width;
   [[self window] setFrame:frame display:NO];
 }
 
 - (void)awakeFromNib {
   [super awakeFromNib];
 
   ContentSettingSimpleBubbleModel* simple_bubble =
       contentSettingBubbleModel_->AsSimpleBubbleModel();
 
-  [[self bubble] setArrowLocation:info_bubble::kTopRight];
+  [[self bubble] setArrowLocation:info_bubble::kTopTrailing];
 
   // Adapt window size to bottom buttons. Do this before all other layouting.
   if (simple_bubble && !simple_bubble->bubble_content().manage_text.empty())
     [self initManageDoneButtons];
 
   [self initializeTitle];
   [self initializeMessage];
 
   // Note that the per-content-type methods and |initializeRadioGroup| below
   // must be kept in the correct order, as they make interdependent adjustments
@@ skipping 108 matching lines @@
 
 - (content_setting_bubble::MediaMenuPartsMap*)mediaMenus {
   return &mediaMenus_;
 }
 
 - (LocationBarDecoration*)decorationForBubble {
   return decoration_;
 }
 
 @end  // ContentSettingBubbleController