Stream blocks of timeline events over the service protocol

runtime/vm/service_event.h

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_SERVICE_EVENT_H_
 #define VM_SERVICE_EVENT_H_
 
 #include "vm/debugger.h"
 
 class DebuggerEvent;
+class TimelineEventBlock;
 
 namespace dart {
 
 class ServiceEvent {
  public:
   enum EventKind {
     kVMUpdate,           // VM identity information has changed
 
     kIsolateStart,       // New isolate has started
     kIsolateRunnable,    // Isolate is ready to run
@@ skipping 16 matching lines @@
     kDebuggerSettingsUpdate,
 
     kGC,
 
     kEmbedder,
 
     kLogging,
 
     kExtension,
 
+    kTimelineEvents,
+
     kIllegal,
   };
 
   struct LogRecord {
     int64_t sequence_number;
     int64_t timestamp;
     intptr_t level;
     const String* name;
     const String* message;
     const Instance* zone;
@@ skipping 119 matching lines @@
   }
 
   void set_extension_event(const ExtensionEvent& extension_event) {
     extension_event_ = extension_event;
   }
 
   int64_t timestamp() const {
     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;
 
  private:
   Isolate* isolate_;
   EventKind kind_;
   const char* embedder_kind_;
   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_;
   const Object* inspectee_;
   const Heap::GCStats* gc_stats_;
   const uint8_t* bytes_;
   intptr_t bytes_length_;
   LogRecord log_record_;
   ExtensionEvent extension_event_;
   int64_t timestamp_;
 };
 
 }  // namespace dart
 
 #endif  // VM_SERVICE_EVENT_H_