import changes from rmottola/Arctic-Fox:

- Bug 932865 - Add ThreadHangStats for collecting background hang telemetry; r=vladan (2f08a076b)
- Bug 932865 - Add way for telemetry to iterate over active threads; r=froydnj (535615d3d)
- Bug 1128768: Part 3 - Update BHR to allow for hang annotations; r=vladan (0b880a667)
- Bug 935092 - Add ThreadStackHelper to get a thread's pesudo-stack; r=BenWa (1422cfe4d)
- Bug 942488 - Don't report pseudo-stacks without SPS profiler. r=nchen (e160a7a08)
- Bug 946817 - Don't assert mPseudoStack on B2G. r=BenWa (9f846df3b)
- Bug 951431 - Don't get stacks during profiler runs on Linux; r=BenWa (15036e907)
- Bug 978262 - Ignore duplicate frames when getting BHR stack. r=froydnj (964721b1b)
- Bug 985155 - Add signal trampoline on ARM Linux to work around kernel bug. r=snorp (cb8a7846c)
- Bug 995730 - Convert xpcom/threads/ to Gecko style. r=froydnj (fe150404e)
- Bug 1013326 - Distinguish chrome and content scripts in pseudostack; r=snorp (81273c977)
- Bug 1023461 - Remove temporary stack buffer in ThreadStackHelper; r=snorp (cf5a717c2)
- Bug 1023461 - Record filename and line number for chrome JS entries; r=snorp (10c89808f)
- Bug 1022456 - Fix modelines in xpcom/{base,glue,io,string,threads}/. (48dbc0416)
- Bug 1016441 - Switch to using real-time signal in ThreadStackHelper; (2c5f818be)
- Bug 1016629 - b. Use RAII class to assign mStackToFill; r=snorp (769eae130)
- Bug 1016629 - c. Add define for ThreadStackHelper pseudostack support; r=snorp (67def0d2f)
- Bug 1016629 - d. Add and implement GetNativeStack method in ThreadStackHelper; r=snorp r=jseward (46c52f2be)
- Bug 1016629 - e. Implement platform-specific code for filling in context; r=snorp r=jseward (e6a66858b)
- Bug 1016629 - g. Avoid ASan flag when copying stack; r=snorp (0159628b5)
- Bug 1045176 - Unbreak build on non-SPS platforms after bug 1016629. (f1d60d838)
- Bug 1047123 - ThreadStackHelper should use UniquePtr<uint8_t[]>, not ScopedDeleteArray. r=jchen (0e4af313c)
- Bug 1049161 - Fix ThreadStackHelper thread handle permissions on Windows; r=snorp (c05172b1c)
- Bug 1050185 - Make ThreadStackHelper::FillThreadContext Valgrind-friendly. r=nchen (368725774)
- Bug 1050440 - Remove repeated js::RunScript frames in ThreadStackHelper (2a79600b3)
- Bug 1046841 - Fix more style violations in previously touched .cpp files in xpcom/. r=froydnj (02afe2493)
- Bug 1069694 - Remove or move around functions in OldDebugAPI. r=shu (177197302)
- Bug 1069694 - Remove OldDebugAPI from the browser. r=shu (b8c917d42)
- Bug 1100911 - For MacOS builds running on Valgrind, make ThreadStackHelper::GetStack be a no-op. r=nchen. (d99c02e16)
- Bug 1091758 - Report full paths for most chrome scripts; r=snorp (2b72e7878)
- Bug 1109291 - Include better paths for hanging chrome scripts in profile extensions directory; r=snorp r=bsmedberg (1997b9532)
- Bug 1113416 - Don't read stack labels inside hang monitor sighandler; r=nfroyd r=snorp (9688f6069)
- bug 1146027 - more final r=froydnj (7b0f295e5)
- Bug 1164090 - Check for Windows path separator in BHR file name; r=snorp (f014b4d78)
- Bug 1169034 - include <cstdlib> in ThreadStackHelper.cpp to declare correct overload for std::abs; r=jseward (874d4447e)
- Bug 1182996 - Fix and add missing namespace comments. rs=ehsan (054fc00b2)
- Bug 932865 - Collect thread hang stats in BackgroundHangMonitor; (ac80c8e9f)
- minor anticipated fixes to get it compiling (2bd701d15)

docshell/base/nsDocShell.cpp

@@ -8486,7 +8486,8 @@ private:
     mRestorePresentationEvent;
   nsRefPtr<nsDocShell::RestorePresentationEvent> mEvent;
 };
-}
+
+} // namespace
 
 nsresult
 nsDocShell::RestoreFromHistory()
@@ -9526,7 +9527,7 @@ CopyFavicon(nsIURI* aOldURI, nsIURI* aNewURI, bool aInPrivateBrowsing)
 #endif
 }
 
-} // anonymous namespace
+} // namespace
 
 class InternalLoadEvent : public nsRunnable
 {