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

chrome/browser/ui/cocoa/extensions/extension_installed_bubble_controller.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/extensions/extension_installed_bubble_controller.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 267 matching lines @@
 }
 
 // Finish nib loading, set arrow location and load icon into window.  This
 // function is exposed for unit testing.
 - (NSWindow*)initializeWindow {
   NSWindow* window = [self window];  // completes nib load
 
   if (installedBubble_ &&
       installedBubble_->anchor_position() ==
           ExtensionInstalledBubble::ANCHOR_OMNIBOX) {
-    [self.bubble setArrowLocation:info_bubble::kTopLeft];
+    [self.bubble setArrowLocation:info_bubble::kTopLeading];
   } else {
-    [self.bubble setArrowLocation:info_bubble::kTopRight];
+    [self.bubble setArrowLocation:info_bubble::kTopTrailing];
   }
 
   // Set appropriate icon, resizing if necessary.
   if ([icon_ size].width > extension_installed_bubble::kIconSize) {
     [icon_ setSize:NSMakeSize(extension_installed_bubble::kIconSize,
                               extension_installed_bubble::kIconSize)];
   }
   [iconImage_ setImage:icon_];
   [iconImage_ setNeedsDisplay:YES];
   return window;
@@ skipping 166 matching lines @@
       extensions::CreateExtensionInstallUI(browser_->profile()));
   install_ui->OpenAppInstalledUI([self extension]->id());
 }
 
 - (void)doClose {
   installedBubble_ = nullptr;
   [self close];
 }
 
 @end