Hide MirroredCompilationErrror behind a flag until post-1.0.

runtime/vm/exceptions.cc

 // Copyright (c) 2011, 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 "vm/exceptions.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/flags.h"
@@ skipping 674 matching lines @@
     case kFallThrough:
       library = Library::CoreLibrary();
       class_name = &Symbols::FallThroughError();
       constructor_name = &Symbols::DotCreate();
       break;
     case kAbstractClassInstantiation:
       library = Library::CoreLibrary();
       class_name = &Symbols::AbstractClassInstantiationError();
       constructor_name = &Symbols::DotCreate();
       break;
-    case kMirroredUncaughtExceptionError:
-      library = Library::MirrorsLibrary();
-      class_name = &Symbols::MirroredUncaughtExceptionError();

[siva, 2013/10/19 00:25:14]

Need to also remove it from Symbols.h

[rmacnak, 2013/10/21 18:26:09]

Done.

-      break;
     case kMirroredCompilationError:
       library = Library::MirrorsLibrary();
       class_name = &Symbols::MirroredCompilationError();
       break;
   }
 
   return DartLibraryCalls::InstanceCreate(library,
                                           *class_name,
                                           *constructor_name,
                                           arguments);
 }
 
 }  // namespace dart