[SfStats] Temporarily enable timestats by default.

Dogfood devices right now don't have telemetry enabled while we move
onto statsd, so this code is not exercised at all in dogfood.

Bug: 136597024
Bug: 140266250
Test: adb shell dumpsys SurfaceFlinger --timestats -dump
Change-Id: Ia11b980107efc8a8788aa3720ebd735f63a5fb8a
diff --git a/services/surfaceflinger/TimeStats/TimeStats.h b/services/surfaceflinger/TimeStats/TimeStats.h
index 9ebc1ad..1313132 100644
--- a/services/surfaceflinger/TimeStats/TimeStats.h
+++ b/services/surfaceflinger/TimeStats/TimeStats.h
@@ -106,7 +106,7 @@
     };
 
 public:
-    TimeStats() = default;
+    TimeStats();
 
     void parseArgs(bool asProto, const Vector<String16>& args, std::string& result) override;
     bool isEnabled() override;