arc: add enterprise_reporting.mojom interface.

chrome/browser/chromeos/arc/arc_watchdog_service.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 "chrome/browser/chromeos/arc/arc_watchdog_service.h"
+
+#include "base/bind.h"
+#include "chrome/browser/chromeos/arc/arc_auth_service.h"
+#include "content/public/browser/browser_thread.h"
+
+namespace arc {
+
+ArcWatchdogService::ArcWatchdogService(ArcBridgeService* bridge_service)
+    : ArcService(bridge_service), binding_(this), weak_factory_(this) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  arc_bridge_service()->AddObserver(this);
+  arc_bridge_service()->watchdog()->AddObserver(this);
+}
+
+ArcWatchdogService::~ArcWatchdogService() {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+
+  arc_bridge_service()->watchdog()->RemoveObserver(this);
+  arc_bridge_service()->RemoveObserver(this);
+}
+
+void ArcWatchdogService::OnInstanceReady() {
+  arc_bridge_service()->watchdog()->instance()->Init(
+      binding_.CreateInterfacePtrAndBind());
+}
+
+void ArcWatchdogService::OnBridgeStopped(ArcBridgeService::StopReason reason) {
+  if (restart_required_) {
+    content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
+                                     base::Bind(&ArcWatchdogService::RestartArc,
+                                                weak_factory_.GetWeakPtr()));

[uekawa-, 2016/07/21 11:55:38]

is it safe to immediately restart ?
I recall there was a race condition that we wanted to fix somewhere.

[Polina Bondarenko, 2016/07/22 08:16:54]

Fixed a CL, but the call, that you're talking about, is still in place. I think,
it is safe to restart a bridge. ArcBridgeService::reconnect_ is set to false
when Shutdown() was called explicitly, thus it doesn't try to reconnect itself.

+  }
+}
+
+void ArcWatchdogService::ClearArcData() {
+  restart_required_ = true;
+  ArcAuthService::Get()->StopArc();
+}
+
+void ArcWatchdogService::RestartArc() {
+  restart_required_ = false;
+  ArcAuthService::Get()->RestartArc();
+}
+
+}  // namespace arc