[Mac RTL] Only tie the avatar button to the left side of the screen when it's moved to that side.

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

 // Copyright 2014 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/profiles/avatar_button_controller.h"
 
 #include "base/mac/foundation_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/profiles/profile_attributes_entry.h"
@@ skipping 168 matching lines @@
 
     [avatarButton setWantsLayer:YES];
     [self setView:avatarButton];
 
     [avatarButton setBezelStyle:NSShadowlessSquareBezelStyle];
     [avatarButton setButtonType:NSMomentaryChangeButton];
     if (switches::IsMaterialDesignUserMenu())
       [[avatarButton cell] setHighlightsBy:NSNoCellMask];
     [avatarButton setBordered:YES];
 
-    if (cocoa_l10n_util::ShouldDoExperimentalRTLLayout())
+    if (cocoa_l10n_util::ShouldFlipWindowControlsInRTL())
       [avatarButton setAutoresizingMask:NSViewMaxXMargin | NSViewMinYMargin];
     else
       [avatarButton setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
     [avatarButton setTarget:self];
     [avatarButton setAction:@selector(buttonClicked:)];
     [avatarButton setRightAction:@selector(buttonClicked:)];
 
     // Check if the account already has an authentication or sync error and
     // initialize the avatar button UI.
     hasError_ = profileObserver_->HasAvatarError();
@@ skipping 144 matching lines @@
 }
 
 - (void)bubbleWillClose:(NSNotification*)notif {
   AvatarButton* button = base::mac::ObjCCastStrict<AvatarButton>(button_);
   [button setIsActive:NO];
   [self updateAvatarButtonAndLayoutParent:NO];
   [super bubbleWillClose:notif];
 }
 
 @end