[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/browser_window_controller.mm

 // Copyright 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/browser_window_controller.h"
 
 #include <cmath>
 #include <numeric>
 #include <utility>
 
@@ skipping 1633 matching lines @@
   NSView* view;
   if ([self shouldUseNewAvatarButton]) {
     avatarButtonController_.reset([[AvatarButtonController alloc]
         initWithBrowser:browser_.get()
                  window:[self window]]);
   } else {
     avatarButtonController_.reset(
       [[AvatarIconController alloc] initWithBrowser:browser_.get()]);
   }
   view = [avatarButtonController_ view];
-  if (cocoa_l10n_util::ShouldDoExperimentalRTLLayout())
-    [view setAutoresizingMask:NSViewMaxXMargin | NSViewMinYMargin];
-  else
-    [view setAutoresizingMask:NSViewMinXMargin | NSViewMinYMargin];
   [view setHidden:![self shouldShowAvatar]];
 
   // Install the view.
   [[[self window] contentView] addSubview:view];
 }
 
 // Called when we get a three-finger swipe.
 - (void)swipeWithEvent:(NSEvent*)event {
   CGFloat deltaX = [event deltaX];
   CGFloat deltaY = [event deltaY];
@@ skipping 346 matching lines @@
 
 - (NSRect)savedRegularWindowFrame {
   return savedRegularWindowFrame_;
 }
 
 - (BOOL)isFullscreenTransitionInProgress {
   return enteringAppKitFullscreen_ || exitingAppKitFullscreen_;
 }
 
 @end  // @implementation BrowserWindowController(WindowType)