Makes WindowTreeHost::InitHost() not Show the window

ui/aura/test/test_screen.cc

 // Copyright (c) 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 "ui/aura/test/test_screen.h"
 
 #include <stdint.h>
 
 #include "base/logging.h"
 #include "ui/aura/env.h"
@@ skipping 38 matching lines @@
                 .CallWmNewDisplayAdded(GetPrimaryDisplay());
   } else {
     host_ =
         WindowTreeHost::Create(gfx::Rect(GetPrimaryDisplay().GetSizeInPixel()));
   }
   // Some tests don't correctly manage window focus/activation states.
   // Makes sure InputMethod is default focused so that IME basics can work.
   host_->GetInputMethod()->OnFocus();
   host_->window()->AddObserver(this);
   host_->InitHost();
+  host_->window()->Show();
   return host_;
 }
 
 void TestScreen::SetDeviceScaleFactor(float device_scale_factor) {
   display::Display display(GetPrimaryDisplay());
   gfx::Rect bounds_in_pixel(display.GetSizeInPixel());
   display.SetScaleAndBounds(device_scale_factor, bounds_in_pixel);
   display_list().UpdateDisplay(display);
   host_->OnHostResizedInPixels(bounds_in_pixel.size());
 }
@@ skipping 94 matching lines @@
 TestScreen::TestScreen(const gfx::Rect& screen_bounds,
                        WindowTreeClient* window_tree_client)
     : host_(nullptr), ui_scale_(1.0f), window_tree_client_(window_tree_client) {
   static int64_t synthesized_display_id = 2000;
   display::Display display(synthesized_display_id++);
   display.SetScaleAndBounds(1.0f, screen_bounds);
   ProcessDisplayChanged(display, true /* is_primary */);
 }
 
 }  // namespace aura