Fix cryptohome unittest compile

Change-Id: I9343dec603936cc3bcea0284e3c277446c68da5e

BUG=none
TEST=Build with FEATURES=test emerge-x86-generic chromeos-base/chromeos-cryptohome (tests build and pass now)

Review URL: http://codereview.chromium.org/6878068
diff --git a/service_unittest.cc b/service_unittest.cc
index e8e6e25..46dc5c9 100755
--- a/service_unittest.cc
+++ b/service_unittest.cc
@@ -59,7 +59,8 @@
 class ServiceSubclass : public Service {
  public:
   ServiceSubclass()
-      : completed_tasks_() { }
+    : Service(false),
+      completed_tasks_() { }
   virtual ~ServiceSubclass() { }
 
   virtual void MountTaskObserve(const MountTaskResult& result) {
@@ -76,7 +77,7 @@
   EXPECT_CALL(mount, TestCredentials(_))
       .WillOnce(Return(true));
 
-  Service service;
+  Service service(false);
   service.set_mount(&mount);
   NiceMock<MockInstallAttributes> attrs;
   service.set_install_attrs(&attrs);
@@ -141,7 +142,7 @@
 TEST(Standalone, CheckAutoCleanupCallback) {
   // Checks that AutoCleanupCallback() is called periodically.
   NiceMock<MockMount> mount;
-  Service service;
+  Service service(false);
   service.set_mount(&mount);
   NiceMock<MockInstallAttributes> attrs;
   service.set_install_attrs(&attrs);