--- a/dom/media/gmp/GMPPlatform.cpp
+++ b/dom/media/gmp/GMPPlatform.cpp
@@ -5,16 +5,17 @@
 
 #include "GMPPlatform.h"
 #include "GMPStorageChild.h"
 #include "GMPTimerChild.h"
 #include "mozilla/Monitor.h"
 #include "GMPChild.h"
 #include "mozilla/Mutex.h"
 #include "base/thread.h"
+#include "base/time.h"
 #include "mozilla/ReentrantMonitor.h"
 
 #include <ctime>
 
 namespace mozilla {
 namespace gmp {
 
 static MessageLoop* sMainLoop = nullptr;
@@ -215,18 +216,21 @@ SetTimerOnMainThread(GMPTask* aTask, int
   GMPTimerChild* timers = sChild->GetGMPTimers();
   NS_ENSURE_TRUE(timers, GMPGenericErr);
   return timers->SetTimer(aTask, aTimeoutMS);
 }
 
 GMPErr
 GetClock(GMPTimestamp* aOutTime)
 {
-  *aOutTime = time(0) * 1000;
-  return GMPNoErr;
+  if (!aOutTime) {
+    return GMPGenericErr;
+  }
+  *aOutTime = base::Time::Now().ToDoubleT() * 1000.0;
+ return GMPNoErr;
 }
 
 void
 InitPlatformAPI(GMPPlatformAPI& aPlatformAPI, GMPChild* aChild)
 {
   if (!sMainLoop) {
     sMainLoop = MessageLoop::current();
   }