Fix TaskScheduler initialization in remoting processes.

remoting/client/jni/chromoting_jni_runtime.cc

 // Copyright 2013 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 "remoting/client/jni/chromoting_jni_runtime.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
 #include "base/android/library_loader/library_loader_hooks.h"
@@ skipping 93 matching lines @@
       base::WaitableEvent::ResetPolicy::AUTOMATIC,
       base::WaitableEvent::InitialState::NOT_SIGNALED);
   network_task_runner()->PostTask(
       FROM_HERE, base::Bind(&ChromotingJniRuntime::DetachFromVmAndSignal,
                             base::Unretained(this), &done_event));
   done_event.Wait();
   display_task_runner()->PostTask(
       FROM_HERE, base::Bind(&ChromotingJniRuntime::DetachFromVmAndSignal,
                             base::Unretained(this), &done_event));
   done_event.Wait();
+
+  // Block until tasks blocking shutdown have completed their execution.

[fdoray, 2017/02/08 13:22:44]

See https://cs.chromium.org/chromium/src/base/task_scheduler/task_traits.h?l=41

+  base::TaskScheduler::GetInstance()->Shutdown();
+
   base::android::LibraryLoaderExitHook();
   base::android::DetachFromVM();
 }
 
 TelemetryLogWriter* ChromotingJniRuntime::GetLogWriter() {
   DCHECK(runtime_->network_task_runner()->BelongsToCurrentThread());
   return log_writer_.get();
 }
 
 void ChromotingJniRuntime::FetchAuthToken() {
@@ skipping 17 matching lines @@
   DCHECK(network_task_runner()->BelongsToCurrentThread());
   log_writer_.reset(new TelemetryLogWriter(
       kTelemetryBaseUrl,
       base::MakeUnique<ChromiumUrlRequestFactory>(runtime_->url_requester())));
   log_writer_->SetAuthClosure(
       base::Bind(&ChromotingJniRuntime::FetchAuthToken,
                  base::Unretained(this)));
 }
 
 }  // namespace remoting