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

chrome/browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac.mm

 // Copyright 2015 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/extensions/toolbar_actions_bar_bubble_mac.h"
 
 #include <utility>
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 69 matching lines @@
                         defer:NO]);
   if ((self = [super initWithWindow:window
                        parentWindow:parentWindow
                          anchoredAt:anchorPoint])) {
     acknowledged_ = NO;
     anchoredToAction_ = anchoredToAction;
     delegate_ = std::move(delegate);
 
     ui::NativeTheme* nativeTheme = ui::NativeTheme::GetInstanceForNativeUi();
     [[self bubble] setAlignment:info_bubble::kAlignArrowToAnchor];
-    [[self bubble] setArrowLocation:info_bubble::kTopRight];
+    [[self bubble] setArrowLocation:info_bubble::kTopTrailing];
     [[self bubble] setBackgroundColor:
         skia::SkColorToCalibratedNSColor(nativeTheme->GetSystemColor(
             ui::NativeTheme::kColorId_DialogBackground))];
 
     if (!g_animations_enabled)
       [window setAllowedAnimations:info_bubble::kAnimateNone];
 
     [self setShouldCloseOnResignKey:delegate_->ShouldCloseOnDeactivate()];
 
     [self layout];
@@ skipping 288 matching lines @@
   } else {
     DCHECK_EQ(sender, actionButton_);
     action = ToolbarActionsBarBubbleDelegate::CLOSE_EXECUTE;
   }
   acknowledged_ = YES;
   delegate_->OnBubbleClosed(action);
   [self close];
 }
 
 @end