Changes to support dprof and Observatory profiler UIs

runtime/vm/profiler.h

Index: runtime/vm/profiler.h
diff --git a/runtime/vm/profiler.h b/runtime/vm/profiler.h
index 1e0ab7328c7863a8061017a3ffa99e40fcd2c696..91307ef7219aa12773fd8dcd42f01df8a58c13ea 100644
--- a/runtime/vm/profiler.h
+++ b/runtime/vm/profiler.h
@@ -16,6 +16,7 @@ namespace dart {
 // Forward declarations.
 class JSONArray;
 class JSONStream;
+class ProfilerSymbolHelper;
 struct Sample;
 
 // Profiler
@@ -32,8 +33,7 @@ class Profiler : public AllStatic {
   static void EndExecution(Isolate* isolate);
 
   static void PrintToJSONStream(Isolate* isolate, JSONStream* stream);
-
-  static void WriteTracing(Isolate* isolate);
+  static void WriteSamples(Isolate* isolate);
 
   static SampleBuffer* sample_buffer() {
     return sample_buffer_;
@@ -43,8 +43,9 @@ class Profiler : public AllStatic {
   static bool initialized_;
   static Monitor* monitor_;
 
-  static void WriteTracingSample(Isolate* isolate, intptr_t pid,
-                                 Sample* sample, JSONArray& events);
+  static void WriteSample(Isolate* isolate,
+                          ProfilerSymbolHelper* symbol_helper,
+                          Sample* sample, JSONArray& events);
 
   static void RecordTickInterruptCallback(const InterruptedThreadState& state,
                                           void* data);
@@ -109,10 +110,10 @@ class SampleBuffer {
 
   Sample* ReserveSample();
 
-  Sample* GetSample(intptr_t i) const {
+  Sample GetSample(intptr_t i) const {
     ASSERT(i >= 0);
     ASSERT(i < capacity_);
-    return &samples_[i];
+    return samples_[i];
   }
 
  private: