CL for testing on Win.

base/trace_event/trace_log.cc

Index: base/trace_event/trace_log.cc
diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index a0b12fbc5426fc1f357b4be8eb219a690ca2c647..09a5f85c72a471e3bf486b9d0a5b4df7f95d24be 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc
@@ -223,6 +223,7 @@ class TraceLog::ThreadLocalEventBuffer
   }
 
   int generation() const { return generation_; }
+  size_t chunk_index() { return chunk_index_; }
 
  private:
   // MessageLoop::DestructionObserver
@@ -1254,6 +1255,11 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
       lock.EnsureAcquired();
       trace_event = AddEventToThreadSharedChunkWhileLocked(&handle, true);
     }
+    if (strcmp(name, "SequencedWorkerPool::Inner::ThreadLoop") == 0) {
+      LOG(ERROR) << "ssid adding event SequencedWorkerPool::Inner::ThreadLoop using " << (thread_local_event_buffer ? "thread_local " : "thread_shared ") << handle.chunk_seq << " " << handle.chunk_index << " " << handle.event_index << " " << name;
+
+      LOG(ERROR) << "ssid sshared index " << thread_shared_chunk_index_ << " local index " << (thread_local_event_buffer? thread_local_event_buffer->chunk_index() : 0);
+    }
 
     if (trace_event) {
       trace_event->Initialize(thread_id,
@@ -1436,6 +1442,15 @@ void TraceLog::UpdateTraceEventDuration(
     TraceEvent* trace_event = GetEventByHandleInternal(handle, &lock);
     if (trace_event) {
       DCHECK(trace_event->phase() == TRACE_EVENT_PHASE_COMPLETE);
+      if (trace_event->duration().ToInternalValue() != -1) {
+        LOG(ERROR) << "ssid got event from "  << (thread_local_event_buffer_.Get() ? "thread_local" : "thread_shared");
+        if (thread_shared_chunk_ && handle.chunk_index == thread_shared_chunk_index_)
+          LOG(ERROR) << "ssid event if not local is from in flight shared chunk with index " << thread_shared_chunk_index_;
+        else
+          LOG(ERROR) << "ssid event if not local is from logged_events_";
+        LOG(ERROR) << "ssid duration set for handle " << handle.chunk_seq << " " << handle.chunk_index << " " << handle.event_index << " " << name;
+      }
+      CHECK_EQ(trace_event->name(), name);
       trace_event->UpdateDuration(now, thread_now);
 #if defined(OS_ANDROID)
       trace_event->SendToATrace();