aura: Unify WindowTreeHost for some platforms

ui/aura/window_tree_host_ozone.cc

-// Copyright 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 "ui/aura/window_tree_host_ozone.h"
-
-#include "base/trace_event/trace_event.h"
-#include "ui/aura/window_event_dispatcher.h"
-#include "ui/ozone/public/ozone_platform.h"
-#include "ui/platform_window/platform_window.h"
-
-namespace aura {
-
-WindowTreeHostOzone::WindowTreeHostOzone(const gfx::Rect& bounds)
-    : widget_(gfx::kNullAcceleratedWidget), current_cursor_(ui::kCursorNull) {
-  platform_window_ =
-      ui::OzonePlatform::GetInstance()->CreatePlatformWindow(this, bounds);
-}
-
-WindowTreeHostOzone::~WindowTreeHostOzone() {
-  DestroyCompositor();
-  DestroyDispatcher();
-}
-
-ui::EventSource* WindowTreeHostOzone::GetEventSource() {
-  return this;
-}
-
-gfx::AcceleratedWidget WindowTreeHostOzone::GetAcceleratedWidget() {
-  return widget_;
-}
-
-void WindowTreeHostOzone::ShowImpl() {
-  platform_window_->Show();
-}
-
-void WindowTreeHostOzone::HideImpl() {
-  platform_window_->Hide();
-}
-
-gfx::Rect WindowTreeHostOzone::GetBounds() const {
-  return platform_window_->GetBounds();
-}
-
-void WindowTreeHostOzone::SetBounds(const gfx::Rect& bounds) {
-  platform_window_->SetBounds(bounds);
-}
-
-gfx::Point WindowTreeHostOzone::GetLocationOnNativeScreen() const {
-  return platform_window_->GetBounds().origin();
-}
-
-void WindowTreeHostOzone::SetCapture() {
-  platform_window_->SetCapture();
-}
-
-void WindowTreeHostOzone::ReleaseCapture() {
-  platform_window_->ReleaseCapture();
-}
-
-void WindowTreeHostOzone::SetCursorNative(gfx::NativeCursor cursor) {
-  if (cursor == current_cursor_)
-    return;
-  current_cursor_ = cursor;
-  platform_window_->SetCursor(cursor.platform());
-}
-
-void WindowTreeHostOzone::MoveCursorToNative(const gfx::Point& location) {
-  platform_window_->MoveCursorTo(location);
-}
-
-void WindowTreeHostOzone::OnCursorVisibilityChangedNative(bool show) {
-}
-
-void WindowTreeHostOzone::OnBoundsChanged(const gfx::Rect& new_bounds) {
-  // TOOD(spang): Should we determine which parts changed?
-  OnHostResized(new_bounds.size());
-  OnHostMoved(new_bounds.origin());
-}
-
-void WindowTreeHostOzone::OnDamageRect(const gfx::Rect& damaged_region) {
-}
-
-void WindowTreeHostOzone::DispatchEvent(ui::Event* event) {
-  TRACE_EVENT0("input", "WindowTreeHostOzone::DispatchEvent");
-  SendEventToProcessor(event);
-}
-
-void WindowTreeHostOzone::OnCloseRequest() {
-  OnHostCloseRequested();
-}
-
-void WindowTreeHostOzone::OnClosed() {
-}
-
-void WindowTreeHostOzone::OnWindowStateChanged(
-    ui::PlatformWindowState new_state) {
-}
-
-void WindowTreeHostOzone::OnLostCapture() {
-}
-
-void WindowTreeHostOzone::OnAcceleratedWidgetAvailable(
-    gfx::AcceleratedWidget widget,
-    float device_pixel_ratio) {
-  widget_ = widget;
-  CreateCompositor();
-  WindowTreeHost::OnAcceleratedWidgetAvailable();
-}
-
-void WindowTreeHostOzone::OnActivationChanged(bool active) {
-}
-
-// static
-WindowTreeHost* WindowTreeHost::Create(const gfx::Rect& bounds) {
-  return new WindowTreeHostOzone(bounds);
-}
-
-}  // namespace aura