Revert of Implement a runtime headless mode for Linux

headless/lib/browser/headless_window_tree_host.cc

-// Copyright 2016 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 "headless/lib/browser/headless_window_tree_host.h"
-
-#include "ui/gfx/icc_profile.h"
-
-namespace headless {
-
-HeadlessWindowTreeHost::HeadlessWindowTreeHost(const gfx::Rect& bounds)
-    : bounds_(bounds) {
-  CreateCompositor();
-  OnAcceleratedWidgetAvailable();
-}
-
-HeadlessWindowTreeHost::~HeadlessWindowTreeHost() {
-  DestroyCompositor();
-  DestroyDispatcher();
-}
-
-bool HeadlessWindowTreeHost::CanDispatchEvent(const ui::PlatformEvent& event) {
-  return false;
-}
-
-uint32_t HeadlessWindowTreeHost::DispatchEvent(const ui::PlatformEvent& event) {
-  return 0;
-}
-
-ui::EventSource* HeadlessWindowTreeHost::GetEventSource() {
-  return this;
-}
-
-gfx::AcceleratedWidget HeadlessWindowTreeHost::GetAcceleratedWidget() {
-  return gfx::AcceleratedWidget();
-}
-
-gfx::Rect HeadlessWindowTreeHost::GetBoundsInPixels() const {
-  return bounds_;
-}
-
-void HeadlessWindowTreeHost::SetBoundsInPixels(const gfx::Rect& bounds) {
-  bool origin_changed = bounds_.origin() != bounds.origin();
-  bool size_changed = bounds_.size() != bounds.size();
-  bounds_ = bounds;
-  if (origin_changed)
-    OnHostMovedInPixels(bounds.origin());
-  if (size_changed)
-    OnHostResizedInPixels(bounds.size());
-}
-
-void HeadlessWindowTreeHost::ShowImpl() {}
-
-void HeadlessWindowTreeHost::HideImpl() {}
-
-gfx::Point HeadlessWindowTreeHost::GetLocationOnScreenInPixels() const {
-  return gfx::Point();
-}
-
-void HeadlessWindowTreeHost::SetCapture() {}
-
-void HeadlessWindowTreeHost::ReleaseCapture() {}
-
-void HeadlessWindowTreeHost::SetCursorNative(gfx::NativeCursor cursor_type) {}
-
-void HeadlessWindowTreeHost::MoveCursorToScreenLocationInPixels(
-    const gfx::Point& location) {}
-
-void HeadlessWindowTreeHost::OnCursorVisibilityChangedNative(bool show) {}
-
-gfx::ICCProfile HeadlessWindowTreeHost::GetICCProfileForCurrentDisplay() {
-  return gfx::ICCProfile();
-}
-
-}  // namespace headless