cros-md: Remove the non-MD immersive mode code paths

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

 // Copyright 2013 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/immersive_mode_controller_stub.h"
 
 #include "base/logging.h"
 
 ImmersiveModeControllerStub::ImmersiveModeControllerStub()
     : ImmersiveModeController(Type::STUB) {}
 
 ImmersiveModeControllerStub::~ImmersiveModeControllerStub() {
 }
 
 void ImmersiveModeControllerStub::Init(BrowserView* browser_view) {
 }
 
 void ImmersiveModeControllerStub::SetEnabled(bool enabled) {
   NOTREACHED();
 }
 
 bool ImmersiveModeControllerStub::IsEnabled() const {
   return false;
 }
 
-bool ImmersiveModeControllerStub::ShouldHideTabIndicators() const {
-  return false;
-}
-
 bool ImmersiveModeControllerStub::ShouldHideTopViews() const {
   return false;
 }
 
 bool ImmersiveModeControllerStub::IsRevealed() const {
   return false;
 }
 
 int ImmersiveModeControllerStub::GetTopContainerVerticalOffset(
     const gfx::Size& top_container_size) const {
   return 0;
 }
 
 ImmersiveRevealedLock* ImmersiveModeControllerStub::GetRevealedLock(
     AnimateReveal animate_reveal) {
   return nullptr;
 }
 
 void ImmersiveModeControllerStub::OnFindBarVisibleBoundsChanged(
     const gfx::Rect& new_visible_bounds_in_screen) {
 }
 
 views::Widget* ImmersiveModeControllerStub::GetRevealWidget() {
   return nullptr;
 }