diff --git a/runtime/signal_catcher.h b/runtime/signal_catcher.h
index 8a2a728..46eae7e 100644
--- a/runtime/signal_catcher.h
+++ b/runtime/signal_catcher.h
@@ -33,17 +33,7 @@
  */
 class SignalCatcher {
  public:
-  // If |use_tombstoned_stack_trace_fd| is |true|, traces will be
-  // written to a file descriptor provided by tombstoned. The process
-  // will communicate with tombstoned via a unix domain socket. This
-  // mode of stack trace dumping is only supported in an Android
-  // environment.
-  //
-  // If false, all traces will be dumped to |stack_trace_file| if it's
-  // non-empty. If |stack_trace_file| is empty, all traces will be written
-  // to the log buffer.
-  SignalCatcher(const std::string& stack_trace_file,
-                const bool use_tombstoned_stack_trace_fd);
+  SignalCatcher();
   ~SignalCatcher();
 
   void HandleSigQuit() REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_,
@@ -54,19 +44,12 @@
   // NO_THREAD_SAFETY_ANALYSIS for static function calling into member function with excludes lock.
   static void* Run(void* arg) NO_THREAD_SAFETY_ANALYSIS;
 
-  // NOTE: We're using android::base::unique_fd here for easier
-  // interoperability with tombstoned client APIs.
-  bool OpenStackTraceFile(android::base::unique_fd* tombstone_fd,
-                          android::base::unique_fd* output_fd);
   void HandleSigUsr1();
   void Output(const std::string& s);
   void SetHaltFlag(bool new_value) REQUIRES(!lock_);
   bool ShouldHalt() REQUIRES(!lock_);
   int WaitForSignal(Thread* self, SignalSet& signals) REQUIRES(!lock_);
 
-  std::string stack_trace_file_;
-  const bool use_tombstoned_stack_trace_fd_;
-
   mutable Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
   ConditionVariable cond_ GUARDED_BY(lock_);
   bool halt_ GUARDED_BY(lock_);