Handle stack frames differently inside and on the boundary of wasm.

src/profiler/sampler.h

Index: src/profiler/sampler.h
diff --git a/src/profiler/sampler.h b/src/profiler/sampler.h
index d890f71c258aa5c8b70a970aa0de74aa70e752b2..89e6aa66aa0df7c447727583baba09a165061067 100644
--- a/src/profiler/sampler.h
+++ b/src/profiler/sampler.h
@@ -58,7 +58,7 @@ struct TickSample {
   unsigned frames_count : kMaxFramesCountLog2;  // Number of captured frames.
   bool has_external_callback : 1;
   bool update_stats : 1;  // Whether the sample should update aggregated stats.
-  StackFrame::Type top_frame_type : 4;
+  StackFrame::Type top_frame_type : 5;
 };
 
 class Sampler {