Check USB device path access when prompting users to select a device.

chromeos/dbus/fake_permission_broker_client.cc

Index: chromeos/dbus/fake_permission_broker_client.cc
diff --git a/chromeos/dbus/fake_permission_broker_client.cc b/chromeos/dbus/fake_permission_broker_client.cc
index c4b265c16daa4bb6ee4bd9ce7baa6161e5e4fb6b..067dca7e640dfd1839d139c89080f0ea472cbfc3 100644
--- a/chromeos/dbus/fake_permission_broker_client.cc
+++ b/chromeos/dbus/fake_permission_broker_client.cc
@@ -16,11 +16,17 @@ FakePermissionBrokerClient::~FakePermissionBrokerClient() {}
 
 void FakePermissionBrokerClient::Init(dbus::Bus* bus) {}
 
+void FakePermissionBrokerClient::CheckPathAccess(
+    const std::string& path,
+    const ResultCallback& callback) {
+  callback.Run(true);
+}
+
 void FakePermissionBrokerClient::RequestPathAccess(
     const std::string& path,
     int interface_id,
     const ResultCallback& callback) {
-  callback.Run(false);
+  callback.Run(true);
 }
 
 void FakePermissionBrokerClient::RequestTcpPortAccess(