Bug 1282408 - Add ignore-initialization-check annotation to mForcePaintEpoch from HangMonitorChild. r=baku

MozReview-Commit-ID: EkreJsiAIZH

dom/ipc/ProcessHangMonitor.cpp

@@ -128,7 +128,7 @@ class HangMonitorChild
   bool mFinishedStartingDebugger;
   bool mForcePaint;
   TabId mForcePaintTab;
-  uint64_t mForcePaintEpoch;
+  MOZ_INIT_OUTSIDE_CTOR uint64_t mForcePaintEpoch;
   JSContext* mContext;
   bool mShutdownDone;