Update dart2js diagnostics to prepare for filtering.

sdk/lib/_internal/compiler/implementation/resolution/class_members.dart

Index: sdk/lib/_internal/compiler/implementation/resolution/class_members.dart
diff --git a/sdk/lib/_internal/compiler/implementation/resolution/class_members.dart b/sdk/lib/_internal/compiler/implementation/resolution/class_members.dart
index c8c9c00c489726373bce23177c6d8711753b7c8d..ec17634d4159433f52182aefef012fdb74c9c4fb 100644
--- a/sdk/lib/_internal/compiler/implementation/resolution/class_members.dart
+++ b/sdk/lib/_internal/compiler/implementation/resolution/class_members.dart
@@ -221,9 +221,9 @@ class MembersCreator {
               () => new Set<Member>()).add(inherited);
         }
         if (someAreGetters && !allAreGetters) {
-          compiler.reportWarningCode(cls,
-                                     MessageKind.INHERIT_GETTER_AND_METHOD,
-                                     {'class': thisType, 'name': name.text });
+          compiler.reportWarning(cls,
+                                 MessageKind.INHERIT_GETTER_AND_METHOD,
+                                 {'class': thisType, 'name': name.text });
           for (Member inherited in inheritedMembers) {
             MessageKind kind;
             if (inherited.isMethod) {
@@ -357,7 +357,7 @@ class MembersCreator {
         }
         reportMessage(
             interfaceMember.element, MessageKind.ABSTRACT_METHOD, () {
-          compiler.reportWarningCode(
+          compiler.reportWarning(
               interfaceMember.element, kind,
               {'class': cls.name, 'name': name.text});
         });
@@ -369,7 +369,7 @@ class MembersCreator {
           Member inherited = interfaceMember.declarations.first;
           reportMessage(
               interfaceMember, MessageKind.UNIMPLEMENTED_METHOD, () {
-            compiler.reportWarningCode(cls,
+            compiler.reportWarning(cls,
                 interfaceMember.declarations.length == 1
                     ? singleKind : multipleKind,
                 {'class': cls.name,
@@ -418,7 +418,7 @@ class MembersCreator {
           if (superMember != null && superMember.isStatic) {
             reportMessage(superMember, MessageKind.INSTANCE_STATIC_SAME_NAME,
                 () {
-              compiler.reportWarningCode(
+              compiler.reportWarning(
                   declared.element,
                   MessageKind.INSTANCE_STATIC_SAME_NAME,
                   {'memberName': declared.name,
@@ -479,7 +479,7 @@ class MembersCreator {
                                MessageKind warningKind,
                                MessageKind infoKind) {
               reportMessage(marker, MessageKind.INVALID_OVERRIDE_METHOD, () {
-                compiler.reportWarningCode(declared.element, warningKind,
+                compiler.reportWarning(declared.element, warningKind,
                     {'declaredType': declared.type,
                      'name': declared.name.text,
                      'class': cls.thisType,