Eliminate dependencies on assemblers and code stubs in precompiled runtime.

runtime/vm/debugger.h

Index: runtime/vm/debugger.h
diff --git a/runtime/vm/debugger.h b/runtime/vm/debugger.h
index e1b23926585d29910624c6c3f7cd5e8dace5cd5d..4d5586a617aa6b52c39a4164b9f99a64e7cee54d 100644
--- a/runtime/vm/debugger.h
+++ b/runtime/vm/debugger.h
@@ -679,9 +679,11 @@ class Debugger {
       const Array& deopt_frame,
       intptr_t deopt_frame_offset,
       ActivationFrame::Kind kind = ActivationFrame::kRegular);
+#if !defined(DART_PRECOMPILED_RUNTIME)
   static RawArray* DeoptimizeToArray(Thread* thread,
                                      StackFrame* frame,
                                      const Code& code);
+#endif
   // Appends at least one stack frame. Multiple frames will be appended
   // if |code| at the frame's pc contains inlined functions.
   static void AppendCodeFrames(Thread* thread,