Make --trace-loading great again.

runtime/bin/gen_snapshot.cc

 // Copyright (c) 2013, 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.
 
 // Generate a snapshot file after loading all the scripts specified on the
 // command line.
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 1410 matching lines @@
     Log::PrintErr("Error: Could not set tag handler for service isolate\n");
     return NULL;
   }
   // Setup the native resolver.
   Builtin::LoadAndCheckLibrary(Builtin::kBuiltinLibrary);
   Builtin::LoadAndCheckLibrary(Builtin::kIOLibrary);
 
   ASSERT(Dart_IsServiceIsolate(isolate));
   // Load embedder specific bits and return. Will not start http server.
   if (!VmService::Setup("127.0.0.1", -1, false /* running_precompiled */,
-                        false /* server dev mode */)) {
+                        false /* server dev mode */,
+                        false /* trace_loading */)) {
     *error = strdup(VmService::GetErrorMessage());
     return NULL;
   }
   Dart_ExitScope();
   Dart_ExitIsolate();
   return isolate;
 }
 
 
 int main(int argc, char** argv) {
@@ skipping 256 matching lines @@
   delete mapped_isolate_snapshot_data;
   return 0;
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }