chromeos: Wait for service to be available when getting system salt

chromeos/dbus/cryptohome_client.cc

Index: chromeos/dbus/cryptohome_client.cc
diff --git a/chromeos/dbus/cryptohome_client.cc b/chromeos/dbus/cryptohome_client.cc
index 79a6561ae9ed47ed4ceef34d3489bb3a768fb208..ca2d48a217eab8583a8de21e4688cf1533ea8195 100644
--- a/chromeos/dbus/cryptohome_client.cc
+++ b/chromeos/dbus/cryptohome_client.cc
@@ -45,6 +45,12 @@ class CryptohomeClientImpl : public CryptohomeClient {
   }
 
   // CryptohomeClient override.
+  virtual void WaitForServiceToBeAvailable(
+      const WaitForServiceToBeAvailableCallback& callback) OVERRIDE {
+    proxy_->WaitForServiceToBeAvailable(callback);
+  }
+
+  // CryptohomeClient override.
   virtual void IsMounted(const BoolDBusMethodCallback& callback) OVERRIDE {
     dbus::MethodCall method_call(cryptohome::kCryptohomeInterface,
                                  cryptohome::kCryptohomeIsMounted);