Remove frog from the repository.

frog/lib/natives.dart

-// 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.
-
-// Native helpers generated by the compiler
-// TODO(jmesserly): more natives should use this pattern
-
-// Translate a JavaScript exception to a Dart exception
-// TODO(jmesserly): cross browser support. This is Chrome specific.
-_toDartException(e) native @"""
-function attachStack(dartEx) {
-  // TODO(jmesserly): setting the stack property is not a long term solution.
-  var stack = e.stack;
-  // The stack contains the error message, and the stack is all that is
-  // printed (the exception's toString() is never called).  Make the Dart
-  // exception's toString() be the dominant message.
-  if (typeof stack == 'string') {
-    var message = dartEx.toString();
-    if (/^(Type|Range)Error:/.test(stack)) {
-      // Indent JS message (it can be helpful) so new message stands out.
-      stack = '    (' + stack.substring(0, stack.indexOf('\n')) + ')\n' +
-              stack.substring(stack.indexOf('\n') + 1);
-    }
-    stack = message + '\n' + stack;
-  }
-  dartEx.stack = stack;
-  return dartEx;
-}
-
-if (e instanceof TypeError) {
-  switch(e.type) {
-    case 'property_not_function':
-    case 'called_non_callable':
-      if (e.arguments[0] == null) {
-        return attachStack(new NullPointerException(null, []));
-      } else {
-        return attachStack(new ObjectNotClosureException());
-      }
-      break;
-    case 'non_object_property_call':
-    case 'non_object_property_load':
-      return attachStack(new NullPointerException(null, []));
-      break;
-    case 'undefined_method':
-      var mname = e.arguments[0];
-      if (typeof(mname) == 'string' && (mname.indexOf('call$') == 0
-          || mname == 'call' || mname == 'apply')) {
-        return attachStack(new ObjectNotClosureException());
-      } else {
-        // TODO(jmesserly): fix noSuchMethod on operators so we don't hit this
-        return attachStack(new NoSuchMethodException('', e.arguments[0], []));
-      }
-      break;
-  }
-} else if (e instanceof RangeError) {
-  if (e.message.indexOf('call stack') >= 0) {
-    return attachStack(new StackOverflowException());
-  }
-}
-return e;""" {
-  // Ensure constructors are generated
-  new ObjectNotClosureException();
-  new NullPointerException(null, null);
-  new NoSuchMethodException(null, null, null);
-  new StackOverflowException();
-}
-
-// TODO(jmesserly): we shouldn't be relying on the e.stack property.
-// Need to mangle it.
-_stackTraceOf(e) native @"return  (e && e.stack) ? e.stack : null;";