Remove support for remaining deprecated features.

sdk/lib/_internal/compiler/implementation/warnings.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.
 
 part of dart2js;
 
 /**
  * The messages in this file should meet the following guide lines:
  *
  * 1. The message should start with exactly one of "Error", "Internal error",
@@ skipping 450 matching lines @@
 
   static const MessageKind TERNARY_OPERATOR_BAD_ARITY = const MessageKind(
       'Error: Operator "#{operatorName}" must have exactly 2 parameters.');
 
   static const MessageKind OPERATOR_OPTIONAL_PARAMETERS = const MessageKind(
       'Error: Operator "#{operatorName}" cannot have optional parameters.');
 
   static const MessageKind OPERATOR_NAMED_PARAMETERS = const MessageKind(
       'Error: Operator "#{operatorName}" cannot have named parameters.');
 
-  // TODO(ahe): This message is hard to localize.  This is acceptable,
-  // as it will be removed when we ship Dart version 1.0.
-  static const MessageKind DEPRECATED_FEATURE_WARNING = const MessageKind(
-      'Warning: Deprecated language feature, #{featureName}, '
-      'will be removed in a future Dart milestone.');
-
-  // TODO(ahe): This message is hard to localize.  This is acceptable,
-  // as it will be removed when we ship Dart version 1.0.
-  static const MessageKind DEPRECATED_FEATURE_ERROR = const MessageKind(
-      'Error: #{featureName} are not legal '
-      'due to option --reject-deprecated-language-features.');
-
   static const MessageKind CONSTRUCTOR_WITH_RETURN_TYPE = const MessageKind(
       'Error: Cannot have return type for constructor.');
 
   static const MessageKind ILLEGAL_FINAL_METHOD_MODIFIER = const MessageKind(
       'Error: Cannot have final modifier on method.');
 
   static const MessageKind ILLEGAL_CONSTRUCTOR_MODIFIERS = const MessageKind(
       'Error: Illegal constructor modifiers: "#{modifiers}".');
 
   static const MessageKind ILLEGAL_MIXIN_APPLICATION_MODIFIERS =
@@ skipping 116 matching lines @@
   static const MessageKind IMPORTED_HERE = const MessageKind(
       'Info: "#{element}" is imported here.');
 
   static const MessageKind OVERRIDE_EQUALS_NOT_HASH_CODE = const MessageKind(
       'Hint: The class "#{class}" overrides "operator==", '
       'but not "get hashCode".');
 
   static const MessageKind PACKAGE_ROOT_NOT_SET = const MessageKind(
       'Error: Cannot resolve "#{uri}". Package root has not been set.');
 
+  static const MessageKind UNSUPPORTED_EQ_EQ_EQ = const MessageKind(
+      'Error: "===" is not an operator. '
+      'Did you mean "#{lhs} == #{rhs}" or "identical(#{lhs}, #{rhs})"?');
+
+  static const MessageKind UNSUPPORTED_BANG_EQ_EQ = const MessageKind(
+      'Error: "!==" is not an operator. '
+      'Did you mean "#{lhs} != #{rhs}" or "!identical(#{lhs}, #{rhs})"?');
+
+  static const MessageKind UNSUPPORTED_THROW_WITHOUT_EXP = const MessageKind(
+      'Error: No expression after "throw". '
+      'Did you mean "rethrow"?');
+
   static const MessageKind COMPILER_CRASHED = const MessageKind(
       'Error: The compiler crashed when compiling this element.');
 
   static const MessageKind PLEASE_REPORT_THE_CRASH = const MessageKind('''
 The compiler is broken.
 
 When compiling the above element, the compiler crashed. It is not
 possible to tell if this is caused by a problem in your program or
 not. Regardless, the compiler should not crash.
 
@@ skipping 183 matching lines @@
 
 class CompileTimeConstantError extends Diagnostic {
   CompileTimeConstantError(MessageKind kind, [Map arguments = const {}])
     : super(kind, arguments);
 }
 
 class CompilationError extends Diagnostic {
   CompilationError(MessageKind kind, [Map arguments = const {}])
     : super(kind, arguments);
 }