[Tracing] Remove AppendLongInteger in TracedValue.

src/counters.cc

Index: src/counters.cc
diff --git a/src/counters.cc b/src/counters.cc
index 911cc3d2391f544198c833d736e1cf3943031051..66e4def3df4bfe8c9d2663085e67300f5616f997 100644
--- a/src/counters.cc
+++ b/src/counters.cc
@@ -280,8 +280,8 @@ void RuntimeCallCounter::Reset() {
 
 void RuntimeCallCounter::Dump(v8::tracing::TracedValue* value) {
   value->BeginArray(name_);
-  value->AppendLongInteger(count_);
-  value->AppendLongInteger(time_.InMicroseconds());
+  value->AppendDouble(count_);
+  value->AppendDouble(time_.InMicroseconds());
   value->EndArray();
 }