Fix CompositorResizeLock to do something.

ui/compositor/compositor_lock.cc

+// Copyright 2017 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/compositor/compositor_lock.h"
+
+namespace ui {
+
+CompositorLock::CompositorLock(CompositorLockClient* client,
+                               base::WeakPtr<CompositorLockDelegate> delegate)
+    : client_(client), delegate_(std::move(delegate)) {}
+
+CompositorLock::~CompositorLock() {
+  if (delegate_)
+    delegate_->RemoveCompositorLock(this);
+}
+
+void CompositorLock::TimeoutLock() {
+  delegate_->RemoveCompositorLock(this);
+  delegate_ = nullptr;
+  if (client_)
+    client_->CompositorLockTimedOut();
+}
+
+}  // namespace ui