Move dart_debugger into tonic and use it in mojo dart controller

mojo/dart/embedder/dart_debugger.h

-// 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.
-
-#ifndef MOJO_DART_EMBEDDER_DART_DEBUGGER_H_
-#define MOJO_DART_EMBEDDER_DART_DEBUGGER_H_
-
-#include <memory>
-#include <vector>
-
-#include "dart/runtime/include/dart_api.h"
-#include "dart/runtime/include/dart_native_api.h"
-#include "dart/runtime/include/dart_tools_api.h"
-#include "mojo/dart/embedder/monitor.h"
-
-namespace base {
-  class Lock;
-}
-
-namespace mojo {
-namespace dart {
-
-class DartDebuggerIsolate {
- public:
-  DartDebuggerIsolate(Dart_IsolateId id)
-      : id_(id) {
-  }
-
-  Dart_IsolateId id() const {
-    return id_;
-  }
-
-  void Notify() {
-    monitor_.Notify();
-  }
-
-  void MessageLoop();
-
- private:
-  const Dart_IsolateId id_;
-  Monitor monitor_;
-};
-
-class DartDebugger {
- public:
-  static void InitDebugger();
-
- private:
-  static void BptResolvedHandler(Dart_IsolateId isolate_id,
-                                 intptr_t bp_id,
-                                 const Dart_CodeLocation& location);
-
-  static void PausedEventHandler(Dart_IsolateId isolate_id,
-                                 intptr_t bp_id,
-                                 const Dart_CodeLocation& loc);
-
-  static void ExceptionThrownHandler(Dart_IsolateId isolate_id,
-                                     Dart_Handle exception,
-                                     Dart_StackTrace stack_trace);
-
-  static void IsolateEventHandler(Dart_IsolateId isolate_id,
-                                  Dart_IsolateEvent kind);
-
-  static void NotifyIsolate(Dart_Isolate isolate);
-
-  static intptr_t FindIsolateIndexById(Dart_IsolateId id);
-
-  static intptr_t FindIsolateIndexByIdLocked(Dart_IsolateId id);
-
-  static void AddIsolate(Dart_IsolateId id);
-
-  static void RemoveIsolate(Dart_IsolateId id);
-
-  static base::Lock* lock_;
-  static std::vector<std::unique_ptr<DartDebuggerIsolate>>* isolates_;
-
-  friend class DartDebuggerIsolate;
-};
-
-}  // namespace dart
-}  // namespace mojo
-
-#endif  // MOJO_DART_EMBEDDER_DART_DEBUGGER_H_