Add more timing information in the VM to track time spent is dart code Vs native code.

runtime/vm/timer.cc

Index: runtime/vm/timer.cc
===================================================================
--- runtime/vm/timer.cc	(revision 32801)
+++ runtime/vm/timer.cc	(working copy)
@@ -26,7 +26,7 @@
 
 
 #define TIMER_FIELD_REPORT(name, msg)                                          \
-  if (name().report() && name().message() != NULL) {       \
+  if (name().report() && name().message() != NULL) {                           \
     OS::Print("%s :  %" Pd64 " micros.\n",                                     \
               name().message(),                                                \
               name().TotalElapsedTime());                                      \
@@ -37,6 +37,17 @@
 #undef TIMER_FIELD_REPORT
 
 
+#define TIMER_STATE_REPORT(prefix, name)                                       \
+  ASSERT(name().message() != NULL);                                            \
+  OS::Print("%s %s : %s\n",                                                    \
+            prefix, name().message(), name().running() ? "on" : "off");
+void TimerList::ReportTimerState(const char* prefix) {
+  TIMER_STATE_REPORT(prefix, time_native_execution);
+  TIMER_STATE_REPORT(prefix, time_dart_execution);
+}
+#undef TIMER_STATE_REPORT
+
+
 #define JSON_TIMER(name, msg)                                                  \
   {                                                                            \
     JSONObject jsobj(&jsarr);                                                  \