Bug 1649653 - fix compilation on non-profiler platforms. r=gerald

Differential Revision: https://phabricator.services.mozilla.com/D81803

mozglue/tests/TestBaseProfiler.cpp

@@ -40,6 +40,8 @@
 #include <type_traits>
 #include <utility>
 
+#ifdef MOZ_GECKO_PROFILER
+
 MOZ_MAYBE_UNUSED static void SleepMilli(unsigned aMilliseconds) {
 #if defined(_MSC_VER) || defined(__MINGW32__)
   Sleep(aMilliseconds);
@@ -58,8 +60,6 @@ MOZ_MAYBE_UNUSED static void SleepMilli(unsigned aMilliseconds) {
 #endif
 }
 
-#ifdef MOZ_GECKO_PROFILER
-
 using namespace mozilla;
 
 void TestPowerOfTwoMask() {