Remove references to IsNewAvatarMenu since the flag was removed.

chrome/browser/ui/views/frame/browser_non_client_frame_view_ash.cc

 // 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.
 
 #include "chrome/browser/ui/views/frame/browser_non_client_frame_view_ash.h"
 
 #include <algorithm>
 
 #include "ash/frame/caption_buttons/frame_caption_button_container_view.h"
 #include "ash/frame/default_header_painter.h"
@@ skipping 557 matching lines @@
   gfx::Rect avatar_bounds(kAvatarSideSpacing,
                           avatar_y,
                           incognito_icon.width(),
                           avatar_height);
   avatar_button()->SetBoundsRect(avatar_bounds);
   avatar_button()->SetVisible(avatar_visible);
 }
 
 #if defined(FRAME_AVATAR_BUTTON)
 void BrowserNonClientFrameViewAsh::LayoutNewStyleAvatar() {
-  DCHECK(switches::IsNewAvatarMenu());
+  DCHECK(new_avatar_button());
 
   gfx::Size button_size = new_avatar_button()->GetPreferredSize();
   int button_x = width() -
       caption_button_container_->GetPreferredSize().width() -
       kNewAvatarButtonOffset - button_size.width();
 
   new_avatar_button()->SetBounds(
       button_x,
       0,
       button_size.width(),
@@ skipping 121 matching lines @@
   }
 }
 
 void BrowserNonClientFrameViewAsh::PaintContentEdge(gfx::Canvas* canvas) {
   DCHECK(!UsePackagedAppHeaderStyle() && !UseWebAppHeaderStyle());
   canvas->FillRect(gfx::Rect(0, caption_button_container_->bounds().bottom(),
                              width(), kClientEdgeThickness),
                    ThemeProperties::GetDefaultColor(
                        ThemeProperties::COLOR_TOOLBAR_SEPARATOR));
 }