Fix debugger stack traces

runtime/vm/debugger_api_impl.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_debugger_api.h"
 
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_api_state.h"
@@ skipping 79 matching lines @@
                             Dart_ActivationFrame* frame) {
   Isolate* isolate = Isolate::Current();
   DARTSCOPE(isolate);
   CHECK_NOT_NULL(frame);
   CHECK_AND_CAST(DebuggerStackTrace, stack_trace, trace);
   if ((frame_index < 0) || (frame_index >= stack_trace->Length())) {
     return Api::NewError("argument 'frame_index' is out of range for %s",
                          CURRENT_FUNC);
   }
   *frame = reinterpret_cast<Dart_ActivationFrame>(
-       stack_trace->ActivationFrameAt(frame_index));
+       stack_trace->FrameAt(frame_index));
   return Api::Success();
 }
 
 static Dart_PausedEventHandler* paused_event_handler = NULL;
 static Dart_BreakpointResolvedHandler* bp_resolved_handler = NULL;
 static Dart_ExceptionThrownHandler* exc_thrown_handler = NULL;
 static Dart_IsolateEventHandler* isolate_event_handler = NULL;
 
 static Dart_BreakpointHandler* legacy_bp_handler = NULL;
 
@@ skipping 739 matching lines @@
 
 
 DART_EXPORT char* Dart_GetVmStatus(const char* request) {
   if (strncmp(request, "/isolate/", 9) == 0) {
     return Isolate::GetStatus(request);
   }
   return NULL;
 }
 
 }  // namespace dart