Add ScopedMacRTL class for Cocoa browser RTL testing

chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm

Index: chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
diff --git a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
index c6f5b449cac641c6bc23e0fe581307aaaf836061..25bd2d07022972a3981a8ebe4660e3d2b58ec679 100644
--- a/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
+++ b/chrome/browser/ui/cocoa/profiles/profile_chooser_controller.mm
@@ -43,7 +43,7 @@
 #include "chrome/browser/ui/cocoa/chrome_style.h"
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
-#include "chrome/browser/ui/cocoa/l10n_util.h"
+#import "ui/base/cocoa/rtl_util.h"
 #include "chrome/browser/ui/cocoa/profiles/signin_view_controller_delegate_mac.h"
 #import "chrome/browser/ui/cocoa/profiles/user_manager_mac.h"
 #include "chrome/browser/ui/profile_chooser_constants.h"
@@ -1368,8 +1368,8 @@ class ActiveProfileObserverBridge : public AvatarMenuObserver,
         l10n_util::GetNSString(IDS_PROFILES_NEW_AVATAR_MENU_ACCESSIBLE_NAME)
                              forAttribute:NSAccessibilityHelpAttribute];
     BOOL shouldUseLeadingEdgeForBubble =
-        cocoa_l10n_util::ShouldDoExperimentalRTLLayout() &&
-        !cocoa_l10n_util::ShouldFlipWindowControlsInRTL();
+        cocoa_rtl_util::ShouldDoExperimentalRTLLayout() &&
+        !cocoa_rtl_util::ShouldFlipWindowControlsInRTL();
     [[self bubble]
         setAlignment:shouldUseLeadingEdgeForBubble
                          ? info_bubble::kAlignLeadingEdgeToAnchorEdge