Remove support for remaining deprecated features.

sdk/lib/_internal/compiler/implementation/warnings.dart

Index: sdk/lib/_internal/compiler/implementation/warnings.dart
diff --git a/sdk/lib/_internal/compiler/implementation/warnings.dart b/sdk/lib/_internal/compiler/implementation/warnings.dart
index 16718a14422b16a9e42c9ff4649a05f70c6ba42d..cabbc5c98a52a30fcb84704babf6150282245013 100644
--- a/sdk/lib/_internal/compiler/implementation/warnings.dart
+++ b/sdk/lib/_internal/compiler/implementation/warnings.dart
@@ -468,18 +468,6 @@ class MessageKind {
   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.');
 
@@ -615,6 +603,16 @@ Error: "#{value}" is not a valid Symbol name because is not:
 
   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: Operator === not supported. Use "identical" instead.');

[ahe, 2013/08/06 14:48:40]

I'm not sure that the suggestion is good. If you mistype == or !=, you are
getting the wrong hint.

I think the error should be something like:

Error: "===" is not an operator.
Did you mean "#{lhs} == #{rhs}" or "identical(#{lhs}, #{rhs})"?

[Johnni Winther, 2013/08/07 06:56:25]

Done.

+  
+  static const MessageKind UNSUPPORTED_BANG_EQ_EQ = const MessageKind(
+      'Error: Operator !== not supported. Use "!identical" instead.');

[ahe, 2013/08/06 14:48:40]

Ditto.

[Johnni Winther, 2013/08/07 06:56:25]

Done.

+  
+  static const MessageKind UNSUPPORTED_THROW_WITHOUT_EXP = const MessageKind(
+      'Error: "throw" without an expression is unsupported. '
+      'Use "rethrow" instead.');

[ahe, 2013/08/06 14:48:40]

Error: No expression after "throw".
Did you mean "rethrow"?

[Johnni Winther, 2013/08/07 06:56:25]

Done.

 
   static const MessageKind COMPILER_CRASHED = const MessageKind(
       'Error: The compiler crashed when compiling this element.');