Removes code using mus client lib

ui/views/mus/window_tree_host_mus.cc

Index: ui/views/mus/window_tree_host_mus.cc
diff --git a/ui/views/mus/window_tree_host_mus.cc b/ui/views/mus/window_tree_host_mus.cc
deleted file mode 100644
index ffb4a827d2db2d8c8a6ae8907052b7bcb47b1062..0000000000000000000000000000000000000000
--- a/ui/views/mus/window_tree_host_mus.cc
+++ /dev/null
@@ -1,102 +0,0 @@
-// Copyright 2015 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/views/mus/window_tree_host_mus.h"
-
-#include "base/memory/ptr_util.h"
-#include "services/ui/public/cpp/window.h"
-#include "ui/aura/env.h"
-#include "ui/aura/window.h"
-#include "ui/aura/window_event_dispatcher.h"
-#include "ui/events/event.h"
-#include "ui/gfx/geometry/dip_util.h"
-#include "ui/platform_window/stub/stub_window.h"
-#include "ui/views/mus/input_method_mus.h"
-#include "ui/views/mus/native_widget_mus.h"
-
-namespace views {
-
-namespace {
-static uint32_t accelerated_widget_count = 1;
-
-bool IsUsingTestContext() {
-  return aura::Env::GetInstance()->context_factory()->DoesCreateTestContexts();
-}
-
-}  // namespace
-
-////////////////////////////////////////////////////////////////////////////////
-// WindowTreeHostMus, public:
-
-WindowTreeHostMus::WindowTreeHostMus(NativeWidgetMus* native_widget,
-                                     ui::Window* window)
-    : native_widget_(native_widget) {
-  CreateCompositor();
-  gfx::AcceleratedWidget accelerated_widget;
-  if (IsUsingTestContext()) {
-    accelerated_widget = gfx::kNullAcceleratedWidget;
-  } else {
-    // We need accelerated widget numbers to be different for each
-    // window and fit in the smallest sizeof(AcceleratedWidget) uint32_t
-    // has this property.
-#if defined(OS_WIN) || defined(OS_ANDROID)
-    accelerated_widget =
-        reinterpret_cast<gfx::AcceleratedWidget>(accelerated_widget_count++);
-#else
-    accelerated_widget =
-        static_cast<gfx::AcceleratedWidget>(accelerated_widget_count++);
-#endif
-  }
-  // TODO(markdittmer): Use correct device-scale-factor from |window|.
-  OnAcceleratedWidgetAvailable(accelerated_widget, 1.f);
-
-  SetPlatformWindow(base::MakeUnique<ui::StubWindow>(
-      this,
-      false));  // Do not advertise accelerated widget; already set manually.
-
-  compositor()->SetWindow(window);
-
-  // Initialize the stub platform window bounds to those of the ui::Window.
-  platform_window()->SetBounds(gfx::ConvertRectToPixel(
-      compositor()->device_scale_factor(), window->bounds()));
-
-  compositor()->SetHostHasTransparentBackground(true);
-}
-
-WindowTreeHostMus::~WindowTreeHostMus() {
-  DestroyCompositor();
-  DestroyDispatcher();
-}
-
-void WindowTreeHostMus::DispatchEvent(ui::Event* event) {
-  // Key events are sent to InputMethodMus directly from NativeWidgetMus.
-  DCHECK(!event->IsKeyEvent());
-  WindowTreeHostPlatform::DispatchEvent(event);
-}
-
-void WindowTreeHostMus::OnClosed() {
-  if (native_widget_)
-    native_widget_->OnPlatformWindowClosed();
-}
-
-void WindowTreeHostMus::OnActivationChanged(bool active) {
-  if (active)
-    GetInputMethod()->OnFocus();
-  else
-    GetInputMethod()->OnBlur();
-  if (native_widget_)
-    native_widget_->OnActivationChanged(active);
-  WindowTreeHostPlatform::OnActivationChanged(active);
-}
-
-void WindowTreeHostMus::OnCloseRequest() {
-  OnHostCloseRequested();
-}
-
-gfx::ICCProfile WindowTreeHostMus::GetICCProfileForCurrentDisplay() {
-  // TODO: This should read the profile from mus. crbug.com/647510
-  return gfx::ICCProfile();
-}
-
-}  // namespace views