Fix QuickLaunch AuraInit Crash

mash/quick_launch/quick_launch.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 "mash/quick_launch/quick_launch.h"
 
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 157 matching lines @@
   windows_.erase(it);
   if (windows_.empty() && base::RunLoop::IsRunningOnCurrentThread())
     base::MessageLoop::current()->QuitWhenIdle();
 }
 
 void QuickLaunch::OnStart() {
   aura_init_ = base::MakeUnique<views::AuraInit>(
       context()->connector(), context()->identity(), "views_mus_resources.pak",
       std::string(), nullptr, views::AuraInit::Mode::AURA_MUS);
 
+  // If AuraInit was unable to initialize there is no longer a peer connection.
+  // The ServiceManager is in the process of shutting down, however we haven't
+  // been notified yet. Close our ServiceContext and shutdown.
+  if (!aura_init_->initialized()) {
+    context()->QuitNow();
+    return;
+  }
+
   Launch(mojom::kWindow, mojom::LaunchMode::MAKE_NEW);
 }
 
 void QuickLaunch::OnBindInterface(
     const service_manager::BindSourceInfo& source_info,
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle interface_pipe) {
   registry_.BindInterface(source_info, interface_name,
                           std::move(interface_pipe));
 }
@@ skipping 16 matching lines @@
   windows_.push_back(window);
 }
 
 void QuickLaunch::Create(const service_manager::BindSourceInfo& source_info,
                          ::mash::mojom::LaunchableRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
 }  // namespace quick_launch
 }  // namespace mash