Bug 1265275 - Replaced using namespace mozilla; & using namespace mozilla::dom; with namespace mozilla{..} & namespace dom{..} in PresentationChild.cpp. r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D86709

dom/presentation/ipc/PresentationChild.cpp

@@ -11,8 +11,8 @@
 #include "PresentationIPCService.h"
 #include "nsThreadUtils.h"
 
-using namespace mozilla;
-using namespace mozilla::dom;
+namespace mozilla {
+namespace dom {
 
 /*
  * Implementation of PresentationChild
@@ -168,3 +168,6 @@ mozilla::ipc::IPCResult PresentationRequestChild::RecvNotifyRequestUrlSelected(
   Unused << NS_WARN_IF(NS_FAILED(mCallback->NotifySuccess(aUrl)));
   return IPC_OK();
 }
+
+}  // namespace dom
+}  // namespace mozilla