Add CefTaskManager API

See https://tests/task_manager example in cefclient.

include/cef_task_manager.h

@@ -0,0 +1,100 @@
+// Copyright (c) 2024 Marshall A. Greenblatt. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the name Chromium Embedded
+// Framework nor the names of its contributors may be used to endorse
+// or promote products derived from this software without specific prior
+// written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// ---------------------------------------------------------------------------
+//
+// The contents of this file must follow a specific format in order to
+// support the CEF translator tool. See the translator.README.txt file in the
+// tools directory for more information.
+//
+
+#ifndef CEF_INCLUDE_CEF_TASK_MANAGER_H_
+#define CEF_INCLUDE_CEF_TASK_MANAGER_H_
+#pragma once
+
+#include <vector>
+
+#include "include/cef_base.h"
+
+///
+/// Class that facilitates managing the browser-related tasks.
+/// The methods of this class may only be called on the UI thread.
+///
+/*--cef(source=library)--*/
+class CefTaskManager : public virtual CefBaseRefCounted {
+ public:
+  typedef std::vector<int64_t> TaskIdList;
+  typedef cef_task_type_t TaskType;
+
+  ///
+  /// Returns the global task manager object.
+  /// Returns nullptr if the method was called from the incorrect thread.
+  ///
+  /*--cef()--*/
+  static CefRefPtr<CefTaskManager> GetTaskManager();
+
+  ///
+  /// Returns the number of tasks currently tracked by the task manager.
+  /// Returns 0 if the method was called from the incorrect thread.
+  ///
+  /*--cef()--*/
+  virtual size_t GetTasksCount() = 0;
+
+  ///
+  /// Gets the list of task IDs currently tracked by the task manager. Tasks
+  /// that share the same process id will always be consecutive. The list will
+  /// be sorted in a way that reflects the process tree: the browser process
+  /// will be first, followed by the gpu process if it exists. Related processes
+  /// (e.g., a subframe process and its parent) will be kept together if
+  /// possible. Callers can expect this ordering to be stable when a process is
+  /// added or removed. The task IDs are unique within the application lifespan.
+  /// Returns false if the method was called from the incorrect thread.
+  ///
+  /*--cef(count_func=task_ids:GetTasksCount)--*/
+  virtual bool GetTaskIdsList(TaskIdList& task_ids) = 0;
+
+  ///
+  /// Gets information about the task with |task_id|.
+  /// Returns true if the information about the task was successfully
+  /// retrieved and false if the |task_id| is invalid or the method was called
+  /// from the incorrect thread.
+  ///
+  /*--cef()--*/
+  virtual bool GetTaskInfo(int64_t task_id, CefTaskInfo& info) = 0;
+
+  ///
+  /// Attempts to terminate a task with |task_id|.
+  /// Returns false if the |task_id| is invalid, the call is made from an
+  /// incorrect thread, or if the task cannot be terminated.
+  ///
+  /*--cef()--*/
+  virtual bool KillTask(int64_t task_id) = 0;
+};
+
+#endif  // CEF_INCLUDE_CEF_TASK_MANAGER_H_