Remove unneeded flag declaratiosn (enable_type_checks, enable_asserts).

runtime/vm/intrinsifier.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.
 // Class for intrinsifying functions.
 
 #include "vm/assembler.h"
 #include "vm/intrinsifier.h"
 #include "vm/flags.h"
 #include "vm/object.h"
 #include "vm/symbols.h"
 
 #include "vm/flow_graph.h"
 #include "vm/flow_graph_compiler.h"
 #include "vm/flow_graph_allocator.h"
 #include "vm/flow_graph_builder.h"
 #include "vm/il_printer.h"
 #include "vm/intermediate_language.h"
 #include "vm/parser.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, intrinsify, true, "Instrinsify when possible");
 DECLARE_FLAG(bool, throw_on_javascript_int_overflow);
 DECLARE_FLAG(bool, code_comments);
 DECLARE_FLAG(bool, print_flow_graph);
 DECLARE_FLAG(bool, print_flow_graph_optimized);
-DECLARE_FLAG(bool, enable_type_checks);
 
 bool Intrinsifier::CanIntrinsify(const Function& function) {
   if (!FLAG_intrinsify) return false;
   if (function.IsClosureFunction()) return false;
   // Can occur because of compile-all flag.
   if (function.is_external()) return false;
   return function.is_intrinsic();
 }
 
 
@@ skipping 646 matching lines @@
                                   new Value(growable_array),
                                   new Value(length),
                                   kNoStoreBarrier,
                                   builder.TokenPos()));
   Definition* null_def = builder.AddNullDefinition();
   builder.AddIntrinsicReturn(new Value(null_def));
   return true;
 }
 
 }  // namespace dart