Bug 1353877 - Don't leak intermediate string in VRServiceTest::AttachVRDisplay. r=froydnj

MozReview-Commit-ID: AR5nTS6KULg

--HG--
extra : rebase_source : a8bd7865ce50984e800076fb3032592542843df8

dom/vr/VRServiceTest.cpp

@@ -322,7 +322,7 @@ VRServiceTest::AttachVRDisplay(const nsAString& aID, ErrorResult& aRv)
   }
 
   gfx::VRManagerChild* vm = gfx::VRManagerChild::Get();
-  vm->CreateVRServiceTestDisplay(nsCString(ToNewUTF8String(aID)), p);
+  vm->CreateVRServiceTestDisplay(NS_ConvertUTF16toUTF8(aID), p);
 
   return p.forget();
 }
@@ -342,10 +342,10 @@ VRServiceTest::AttachVRController(const nsAString& aID, ErrorResult& aRv)
   }
 
   gfx::VRManagerChild* vm = gfx::VRManagerChild::Get();
-  vm->CreateVRServiceTestController(nsCString(ToNewUTF8String(aID)), p);
+  vm->CreateVRServiceTestController(NS_ConvertUTF16toUTF8(aID), p);
 
   return p.forget();
 }
 
 } // namespace dom
-} // namespace mozilla
+} // namespace mozilla