Trace revision and v8 version for IterationInfo

content/browser/tracing/tracing_controller_impl.cc

Index: content/browser/tracing/tracing_controller_impl.cc
diff --git a/content/browser/tracing/tracing_controller_impl.cc b/content/browser/tracing/tracing_controller_impl.cc
index c36a63323fa8a7ad3632bb8518ec537bc930fddc..fd86696b6039998ec12e7f2d13f386db04dd8fca 100644
--- a/content/browser/tracing/tracing_controller_impl.cc
+++ b/content/browser/tracing/tracing_controller_impl.cc
@@ -30,6 +30,7 @@
 #include "content/public/common/content_switches.h"
 #include "gpu/config/gpu_info.h"
 #include "net/base/network_change_notifier.h"
+#include "v8/include/v8.h"
 
 #if (defined(OS_POSIX) && defined(USE_UDEV)) || defined(OS_WIN) || \
     defined(OS_MACOSX)
@@ -114,6 +115,7 @@ std::unique_ptr<base::DictionaryValue> GenerateTracingMetadataDict() {
 
   metadata_dict->SetString("network-type", GetNetworkTypeString());
   metadata_dict->SetString("product-version", GetContentClient()->GetProduct());
+  metadata_dict->SetString("v8-version", v8::V8::GetVersion());
   metadata_dict->SetString("user-agent", GetContentClient()->GetUserAgent());
 
   // OS