Using 'interface' and 'abstract' for methods should produce error

compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java

Index: compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java
diff --git a/compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java b/compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java
index b2deab623e1d5e5636d3ade101cb14cae3bc514c..eae6efdd12806a3e1e62e34e7f912c6ca76f27ca 100644
--- a/compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java
+++ b/compiler/java/com/google/dart/compiler/parser/ParserErrorCode.java
@@ -15,8 +15,6 @@ import com.google.dart.compiler.SubSystem;
  * the beginning default English translation of the message.
  */
 public enum ParserErrorCode implements ErrorCode {
-  ABSTRACT_MEMBER_IN_INTERFACE("Abstract members are not allowed in interfaces"),
-  ABSTRACT_METHOD_WITH_BODY("Abstract method cannot have a body"),
   ABSTRACT_TOP_LEVEL_ELEMENT("Only class can be abstract top-level element"),
   BREAK_OUTSIDE_OF_LOOP("'break' used outside of loop, case statement"),
   BUILT_IN_IDENTIFIER_AS_TYPE_NAME("Built-in identifier cannot be used as type name"),
@@ -33,13 +31,14 @@ public enum ParserErrorCode implements ErrorCode {
   DEFAULT_POSITIONAL_PARAMETER("Positional parameters cannot have default values"),
   DEPRECATED_CATCH("This style of catch clause has been deprecated. Please use the 'on' <type> " +
       "'catch' '(' <identifier> (',' <identifier>)? ')' form."),
+  DEPRECATED_ABSTRACT_METHOD("Modifier 'abstract' is deprecated for methods without body. Remove it."),
   DEPRECATED_GETTER("The presence of parentheses after the name of the getter "
       + "has been deprecated and will soon be disallowed. Please remove the parentheses."),
+  DEPRECATED_INTERFACE("Deprecated declaration of the 'interface', use abstract 'class' instead"),
   DEPRECATED_USE_OF_FACTORY_KEYWORD("Deprecated use of the 'factory' keyword: use 'default' instead"),
   DEPRECATED_RAW_STRING("The use of '@' to prefix a raw string has been deprecated; use 'r' instead"),
   DEPRECATED_RESOURCE_DIRECTIVE("The #resource directive has been deprecated and will soon be disallowed"),
   DIRECTIVE_OUT_OF_ORDER("Directive out of order"),
-  DISALLOWED_ABSTRACT_KEYWORD("Abstract keyword not allowed here"),
   // TODO(zundel): error message needs JUnit test (unreachable code?)
   DISALLOWED_FACTORY_KEYWORD("Factory keyword not allowed here"),
   DISALLOWED_STATIC_KEYWORD("Static keyword not allowed here"),
@@ -75,13 +74,11 @@ public enum ParserErrorCode implements ErrorCode {
   EXPECTED_VAR_FINAL_OR_TYPE("Expected 'var', 'final' or type"),
   EXTERNAL_ONLY_METHOD("Only a top-level function, a method, a getter, a setter or an non-redirecting constructor can be specified as external"),
   EXTERNAL_METHOD_BODY("External methods cannot have body"),
-  EXTERNAL_ABSTRACT("External methods cannot be abstract"),
   INVALID_SEPARATOR_FOR_NAMED("Use ':' between a named parameter and its value"),
   INVALID_SEPARATOR_FOR_OPTIONAL("Use '=' between an optional parameter and its value"),
   // TODO(zundel): this error message is out of date
   NATIVE_ONLY_CLASS("Native keyword can be specified only for classes"),
   NATIVE_ONLY_CORE_LIB("Native keyword can be used only in corelib"),
-  FACTORY_CANNOT_BE_ABSTRACT("A factory cannot be abstract"),
   FACTORY_CANNOT_BE_STATIC("A factory cannot be static"),
   FACTORY_CANNOT_BE_TOP_LEVEL("A factory cannot be top level, it must be a member of a class"),
   FACTORY_MEMBER_IN_INTERFACE("Factory members are not allowed in interfaces"),
@@ -123,7 +120,6 @@ public enum ParserErrorCode implements ErrorCode {
   REDIRECTING_CONSTRUCTOR_ITSELF("Redirecting constructor cannot have initializers"),
   REDIRECTING_CONSTRUCTOR_MULTIPLE("Multiple redirecting constructor invocations"),
   REDIRECTING_CONSTRUCTOR_OTHER("Redirecting constructor cannot have initializers"),
-  STATIC_MEMBERS_CANNOT_BE_ABSTRACT("Static members cannot be abstract"),
   SUPER_CONSTRUCTOR_MULTIPLE("'super' must be called only once in the initialization list"),
   SUPER_CANNOT_BE_USED_AS_THE_SECOND_OPERAND(
       "'super' cannot be used as the second operand in a binary expression."),