Bug 1374596: P6. More missing headers fixes. r=padenot

MozReview-Commit-ID: 5VYScGXOJsE

--HG--
extra : rebase_source : 6d7433b9277fb582d4873d6bb88691f5e6eab4ed

dom/media/MediaTimer.h

@@ -7,6 +7,7 @@
 #if !defined(MediaTimer_h_)
 #define MediaTimer_h_
 
+#include "mozilla/AbstractThread.h"
 #include "mozilla/IntegerPrintfMacros.h"
 #include "mozilla/Monitor.h"
 #include "mozilla/MozPromise.h"

dom/media/MemoryBlockCache.cpp

@@ -9,6 +9,7 @@
 #include "MediaPrefs.h"
 #include "mozilla/Atomics.h"
 #include "mozilla/Logging.h"
+#include "mozilla/Telemetry.h"
 #include "prsystem.h"
 
 namespace mozilla {