Backed out 4 changesets (bug 1318004) for xpcshell failures a=backout CLOSED TREE

Backed out changeset a3fe53641526 (bug 1318004)
Backed out changeset a5d1676b6f88 (bug 1318004)
Backed out changeset b56b37f0f4d7 (bug 1318004)
Backed out changeset fb5254baf1cb (bug 1318004)

toolkit/components/perf/PerfMeasurement.cpp

@@ -25,9 +25,13 @@ NS_GENERIC_FACTORY_CONSTRUCTOR(Module)
 
 NS_IMPL_ISUPPORTS(Module, nsIXPCScriptable)
 
-Module::Module() = default;
+Module::Module()
+{
+}
 
-Module::~Module() = default;
+Module::~Module()
+{
+}
 
 #define XPC_MAP_CLASSNAME Module
 #define XPC_MAP_QUOTED_CLASSNAME "Module"