Stream blocks of timeline events over the service protocol

runtime/vm/service_event.h

Index: runtime/vm/service_event.h
diff --git a/runtime/vm/service_event.h b/runtime/vm/service_event.h
index 208b1dfd1a4507842462d44125f7377542f9fbc5..3ca26e40a97c12f41b7b27c615178d0643afccd6 100644
--- a/runtime/vm/service_event.h
+++ b/runtime/vm/service_event.h
@@ -8,6 +8,7 @@
 #include "vm/debugger.h"
 
 class DebuggerEvent;
+class TimelineEventBlock;
 
 namespace dart {
 
@@ -44,6 +45,8 @@ class ServiceEvent {
 
     kExtension,
 
+    kTimelineEvents,
+
     kIllegal,
   };
 
@@ -183,6 +186,15 @@ class ServiceEvent {
     return timestamp_;
   }
 
+  const TimelineEventBlock* timeline_event_block() const {
+    return timeline_event_block_;
+  }
+
+  void set_timeline_event_block(const TimelineEventBlock* block) {
+    ASSERT(kind() == kTimelineEvents);
+    timeline_event_block_ = block;
+  }
+
   void PrintJSON(JSONStream* js) const;
 
   void PrintJSONHeader(JSONObject* jsobj) const;
@@ -194,6 +206,7 @@ class ServiceEvent {
   const char* embedder_stream_id_;
   Breakpoint* breakpoint_;
   ActivationFrame* top_frame_;
+  const TimelineEventBlock* timeline_event_block_;
   const String* extension_rpc_;
   const Object* exception_;
   bool at_async_jump_;