mash: Change CastConfigDelegate to a mojoified CastConfigClient.

ash/common/cast_config_client_proxy.cc

Index: ash/common/cast_config_client_proxy.cc
diff --git a/ash/common/cast_config_client_proxy.cc b/ash/common/cast_config_client_proxy.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c51a0d4d11449b8881222bbfcc4ef72f3a593d2b
--- /dev/null
+++ b/ash/common/cast_config_client_proxy.cc
@@ -0,0 +1,72 @@
+// 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 "ash/common/cast_config_client_proxy.h"
+
+#include "base/logging.h"
+#include "content/public/common/service_names.mojom.h"
+#include "services/service_manager/public/cpp/connector.h"
+
+namespace ash {
+
+CastConfigClientProxy::CastConfigClientProxy(
+    service_manager::Connector* connector)
+    : connector_(connector) {}
+
+CastConfigClientProxy::~CastConfigClientProxy() {}
+
+void CastConfigClientProxy::AddObserverBinding(
+    mojo::AssociatedBinding<mojom::CastConfigObserver>* observer_binding) {
+  if (!ConnectToClient())
+    return;
+
+  ash::mojom::CastConfigObserverAssociatedPtrInfo ptr_info;
+  observer_binding->Bind(&ptr_info, client_.associated_group());
+  AddObserver(std::move(ptr_info));
+}
+
+bool CastConfigClientProxy::CanConnect() {
+  return ConnectToClient();
+}
+
+void CastConfigClientProxy::RequestDeviceRefresh() {
+  if (ConnectToClient())
+    client_->RequestDeviceRefresh();
+}
+
+void CastConfigClientProxy::CastToSink(ash::mojom::CastSinkPtr sink) {
+  if (ConnectToClient())
+    client_->CastToSink(std::move(sink));
+}
+
+void CastConfigClientProxy::StopCasting(ash::mojom::CastRoutePtr route) {
+  if (ConnectToClient())
+    client_->StopCasting(std::move(route));
+}
+
+void CastConfigClientProxy::AddObserver(
+    ash::mojom::CastConfigObserverAssociatedPtrInfo observer) {
+  if (ConnectToClient())
+    client_->AddObserver(std::move(observer));
+}
+
+bool CastConfigClientProxy::ConnectToClient() {
+  // Unit tests may not have a connector.
+  if (!connector_)
+    return false;
+
+  if (client_)
+    return true;
+
+  connector_->ConnectToInterface(content::mojom::kBrowserServiceName, &client_);
+  client_.set_connection_error_handler(base::Bind(
+      &CastConfigClientProxy::OnClientConnectionError, base::Unretained(this)));
+  return true;
+}
+
+void CastConfigClientProxy::OnClientConnectionError() {
+  client_.reset();
+}
+
+}  // namespace ash