Making WTH::InitCompositor() protected instead of public.

mash/simple_wm/simple_wm.cc

 // Copyright 2016 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 "mash/simple_wm/simple_wm.h"
 
 #include "base/strings/utf_string_conversions.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/display/screen_base.h"
 #include "ui/gfx/canvas.h"
@@ skipping 178 matching lines @@
   screen_->display_list().AddDisplay(display,
                                      display::DisplayList::Type::PRIMARY);
 }
 
 void SimpleWM::OnWmNewDisplay(
     std::unique_ptr<aura::WindowTreeHostMus> window_tree_host,
     const display::Display& display) {
   // Only handles a single root.
   DCHECK(!root_);
   window_tree_host_ = std::move(window_tree_host);
-  window_tree_host_->InitCompositor();
+  window_tree_host_->InitHost();
   root_ = window_tree_host_->window();
   DCHECK(window_manager_client_);
   window_manager_client_->AddActivationParent(root_);
   ui::mojom::FrameDecorationValuesPtr frame_decoration_values =
       ui::mojom::FrameDecorationValues::New();
   frame_decoration_values->normal_client_area_insets.Set(
       kNonClientTopHeight, kNonClientSize, kNonClientSize, kNonClientSize);
   frame_decoration_values->max_title_bar_button_width = 0;
   window_manager_client_->SetFrameDecorationValues(
       std::move(frame_decoration_values));
@@ skipping 26 matching lines @@
     const std::vector<gfx::Rect>& additional_client_areas) {}
 
 SimpleWM::FrameView* SimpleWM::GetFrameViewForClientWindow(
     aura::Window* client_window) {
   auto it = client_window_to_frame_view_.find(client_window);
   return it != client_window_to_frame_view_.end() ? it->second : nullptr;
 }
 
 }  // namespace simple_wm