Support idle time in CPU profiler

src/cpu-profiler.cc

Index: src/cpu-profiler.cc
diff --git a/src/cpu-profiler.cc b/src/cpu-profiler.cc
index 0a83b85f50593cf272273efe163ffe4bf1a9e3e4..747542f73781d79efc5ec5d297af6d7b6c1020da 100644
--- a/src/cpu-profiler.cc
+++ b/src/cpu-profiler.cc
@@ -106,7 +106,7 @@ bool ProfilerEventsProcessor::ProcessCodeEvent() {
 
 bool ProfilerEventsProcessor::ProcessTicks() {
   while (true) {
-    if (!ticks_from_vm_buffer_.IsEmpty()
+    while (!ticks_from_vm_buffer_.IsEmpty()
         && ticks_from_vm_buffer_.Peek()->order ==
            last_processed_code_event_id_) {
       TickSampleEventRecord record;