--- a/tools/profiler/core/platform.cpp
+++ b/tools/profiler/core/platform.cpp
@@ -47,16 +47,17 @@
 #include "mozilla/MathAlgorithms.h"
 #include "mozilla/Scheduler.h"
 #include "mozilla/StackWalk.h"
 #include "mozilla/StaticPtr.h"
 #include "mozilla/SystemGroup.h"
 #include "mozilla/ThreadLocal.h"
 #include "mozilla/TimeStamp.h"
 #include "mozilla/Tuple.h"
+#include "mozilla/dom/ContentChild.h"
 #include "mozilla/extensions/WebExtensionPolicy.h"
 #include "ThreadInfo.h"
 #include "nsIHttpProtocolHandler.h"
 #include "nsIObserverService.h"
 #include "nsIXULAppInfo.h"
 #include "nsIXULRuntime.h"
 #include "nsDirectoryServiceUtils.h"
 #include "nsDirectoryServiceDefs.h"
@@ -1679,16 +1680,28 @@ StreamMetaJSCustomObject(PSLockRef aLock
 
   aWriter.IntProperty("gcpoison", JS::IsGCPoisoning() ? 1 : 0);
 
   bool asyncStacks = Preferences::GetBool("javascript.options.asyncstack");
   aWriter.IntProperty("asyncstack", asyncStacks);
 
   aWriter.IntProperty("processType", XRE_GetProcessType());
 
+  nsAutoCString processName;
+  if (XRE_IsParentProcess()) {
+    // We're the main process.
+    processName.AssignLiteral("Main Process");
+  } else if (dom::ContentChild* cc = dom::ContentChild::GetSingleton()) {
+    // Try to get the process name from ContentChild.
+    cc->GetProcessName(processName);
+  }
+  if (!processName.IsEmpty()) {
+    aWriter.StringProperty("processName", processName.Data());
+  }
+
   nsresult res;
   nsCOMPtr<nsIHttpProtocolHandler> http =
     do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http", &res);
 
   if (!NS_FAILED(res)) {
     nsAutoCString string;
 
     res = http->GetPlatform(string);