SetDeviceScaleFactorForTest

ui/aura/test/aura_test_helper.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/aura_test_helper.h"
 
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "ui/aura/client/default_capture_client.h"
 #include "ui/aura/client/focus_client.h"
@@ skipping 55 matching lines @@
   env_helper.ResetEventState();
 
   ui::InitializeInputMethodForTesting();
 
   display::Screen* screen = display::Screen::GetScreen();
   gfx::Size host_size(screen ? screen->GetPrimaryDisplay().GetSizeInPixel()
                              : gfx::Size(800, 600));
   test_screen_.reset(TestScreen::Create(host_size));
   if (!screen)
     display::Screen::SetScreenInstance(test_screen_.get());
-  host_.reset(test_screen_->CreateHostForPrimaryDisplay());
+  test_screen_->CreateHostForPrimaryDisplay();
 
   focus_client_.reset(new TestFocusClient);
   client::SetFocusClient(root_window(), focus_client_.get());
   stacking_client_.reset(new TestWindowTreeClient(root_window()));
   capture_client_.reset(new client::DefaultCaptureClient(root_window()));
 
   root_window()->Show();
   // Ensure width != height so tests won't confuse them.
   host()->SetBounds(gfx::Rect(host_size));
 }
@@ skipping 21 matching lines @@
 
 void AuraTestHelper::RunAllPendingInMessageLoop() {
   // TODO(jbates) crbug.com/134753 Find quitters of this RunLoop and have them
   //              use run_loop.QuitClosure().
   base::RunLoop run_loop;
   run_loop.RunUntilIdle();
 }
 
 }  // namespace test
 }  // namespace aura