Updated native memory allocation profiling to use its own sample buffer instead of sharing a sample…

runtime/vm/profiler_service.h

Index: runtime/vm/profiler_service.h
diff --git a/runtime/vm/profiler_service.h b/runtime/vm/profiler_service.h
index b746f510626940455306362e178a37f3b7c6125a..55e1742e4c3aa839ea771dd8a6ddac651b235495 100644
--- a/runtime/vm/profiler_service.h
+++ b/runtime/vm/profiler_service.h
@@ -375,6 +375,7 @@ class Profile : public ValueObject {
   // Build a filtered model using |filter| with the specified |tag_order|.
   void Build(Thread* thread,
              SampleFilter* filter,
+             SampleBuffer* sample_buffer,
              TagOrder tag_order,
              intptr_t extra_tags = 0);
 
@@ -500,6 +501,7 @@ class ProfilerService : public AllStatic {
                             Profile::TagOrder tag_order,
                             intptr_t extra_tags,
                             SampleFilter* filter,
+                            SampleBuffer* sample_buffer,
                             bool as_timline);
 };