Makes WindowTreeHost::InitHost() not Show the window

ash/display/mirror_window_controller.cc

 // Copyright (c) 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 "ash/display/mirror_window_controller.h"
 
 #include <utility>
 
 #if defined(USE_X11)
 #include <X11/extensions/XInput2.h>
@@ skipping 174 matching lines @@
       host->window()->SetName(
           base::StringPrintf("MirrorRootWindow-%d", mirror_host_count++));
       host->compositor()->SetBackgroundColor(SK_ColorBLACK);
       // No need to remove the observer because the WindowTreeHostManager
       // outlives the host.
       host->AddObserver(Shell::GetInstance()->window_tree_host_manager());
       host->AddObserver(this);
       // TODO(oshima): TouchHUD is using idkey.
       InitRootWindowSettings(host->window())->display_id = display_info.id();
       host->InitHost();
+      host->window()->Show();

[mfomitchev, 2016/12/13 22:30:32]

We are already calling host->Show() below, so we shouldn't have to call Show()
on the window here.
I think it would be better if here and in all the other places we either called
host->Show() instead of host->window()->Show(), or didn't do anything (because
host->Show() is already called somewhere else).

 #if defined(USE_X11)
       if (!display_manager->IsInUnifiedMode()) {
         // Mirror window shouldn't handle input events.
         static_cast<aura::WindowTreeHostX11*>(host)->DisableInput();
       }
 #endif
 
 #if defined(OS_CHROMEOS)
       if (display_manager->IsInUnifiedMode()) {
         host_info->ash_host->ConfineCursorToRootWindow();
@@ skipping 166 matching lines @@
   // EventProcessor may be accessed after this call if the mirroring window
   // was deleted as a result of input event (e.g. shortcut), so don't delete
   // now.
   if (delay_host_deletion)
     base::ThreadTaskRunnerHandle::Get()->DeleteSoon(FROM_HERE, host_info);
   else
     delete host_info;
 }
 
 }  // namespace ash