Mojo: Make device/ to not rely on connecton error notification on message loop destruction.

device/usb/mojo/device_manager_impl.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 DEVICE_USB_MOJO_DEVICE_MANAGER_IMPL_H_
 #define DEVICE_USB_MOJO_DEVICE_MANAGER_IMPL_H_
 
 #include <memory>
 #include <queue>
 #include <set>
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "device/usb/public/interfaces/device_manager.mojom.h"
 #include "device/usb/usb_service.h"
 #include "mojo/public/cpp/bindings/array.h"
-#include "mojo/public/cpp/bindings/binding.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace base {
 class SequencedTaskRunner;
 }
 
 namespace device {
 
 class UsbDevice;
 class UsbDeviceFilter;
 class UsbDeviceHandle;
@@ skipping 46 matching lines @@
   // next call to GetDeviceChanges.
   std::queue<GetDeviceChangesCallback> device_change_callbacks_;
   std::map<std::string, DeviceInfoPtr> devices_added_;
   std::vector<DeviceInfoPtr> devices_removed_;
 
   UsbService* usb_service_;
   ScopedObserver<UsbService, UsbService::Observer> observer_;
 
   mojo::Closure connection_error_handler_;
 
-  mojo::Binding<DeviceManager> binding_;
+  mojo::StrongBinding<DeviceManager> binding_;
   base::WeakPtrFactory<DeviceManagerImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DeviceManagerImpl);
 };
 
 }  // namespace usb
 }  // namespace device
 
 #endif  // DEVICE_USB_MOJO_DEVICE_MANAGER_IMPL_H_