Fix compile error on simple chrome.

components/arc/arc_bridge_service_unittest.cc

Index: components/arc/arc_bridge_service_unittest.cc
diff --git a/components/arc/arc_bridge_service_unittest.cc b/components/arc/arc_bridge_service_unittest.cc
index 60a143de844310c799f2b301fb12cbe7280a0479..8eb7e477c8fcd554095d82011f2318f92314950f 100644
--- a/components/arc/arc_bridge_service_unittest.cc
+++ b/components/arc/arc_bridge_service_unittest.cc
@@ -58,14 +58,14 @@ class ArcBridgeTest : public testing::Test,
   static std::unique_ptr<ArcBridgeBootstrap> CreateSuspendedBootstrap() {
     auto bootstrap = base::MakeUnique<FakeArcBridgeBootstrap>();
     bootstrap->SuspendBoot();
-    return bootstrap;
+    return std::move(bootstrap);
   }
 
   static std::unique_ptr<ArcBridgeBootstrap> CreateBootFailureBootstrap(
       ArcBridgeService::StopReason reason) {
     auto bootstrap = base::MakeUnique<FakeArcBridgeBootstrap>();
     bootstrap->EnableBootFailureEmulation(reason);
-    return bootstrap;
+    return std::move(bootstrap);
   }
 
  private: