[fuchsia] Make profile processing resilient to bogus overlaps from dladdr.

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 8045906e14442710f4cfed8e2663d27a4d32f1a6..6424cd054a95545f8ae0a01526645dece84f99eb 100644
--- a/runtime/vm/profiler_service.h
+++ b/runtime/vm/profiler_service.h
@@ -171,7 +171,10 @@ class ProfileCode : public ZoneAllocated {
   uword end() const { return end_; }
   void set_end(uword end) { end_ = end; }
 
-  void AdjustExtent(uword start, uword end);
+  void ExpandLower(uword start);
+  void ExpandUpper(uword end);
+  void TruncateLower(uword start);
+  void TruncateUpper(uword end);
 
   bool Contains(uword pc) const { return (pc >= start_) && (pc < end_); }