Add getIsolateID to Service class in dart:developer

runtime/lib/developer.cc

Index: runtime/lib/developer.cc
diff --git a/runtime/lib/developer.cc b/runtime/lib/developer.cc
index 5d6027b8f9f68820cffad471c48f188930de232a..d53185e9471604bde558e5f3a6a8550c312df6e8 100644
--- a/runtime/lib/developer.cc
+++ b/runtime/lib/developer.cc
@@ -172,4 +172,16 @@ DEFINE_NATIVE_ENTRY(Developer_webServerControl, 2) {
 #endif
 }
 
+
+DEFINE_NATIVE_ENTRY(Developer_getIsolateIdFromSendPort, 1) {
+#if defined(PRODUCT)
+  return Object::null();
+#else
+  GET_NON_NULL_NATIVE_ARGUMENT(SendPort, port, arguments->NativeArgAt(0));
+  int64_t port_id = port.Id();
+  return String::NewFormatted("isolates/%" Pd64 "", port_id);

[siva, 2016/12/01 00:09:11]

isolates or isolate ?

[Cutch, 2016/12/01 20:41:30]

the above code is correct. I've moved the format string into a common place so
the two locations can share one definition.

+#endif
+}
+
+
 }  // namespace dart