Remove deprecated mappedBy.

Committed: https://code.google.com/p/dart/source/detail?r=18575
Reverted: http://code.google.com/p/dart/source/detail?r=18576

Review URL: https://codereview.chromium.org//12212213

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18579 260f80e4-7a28-3924-810f-c04153c831b5

tests/html/element_classes_test.dart

@@ -66,7 +66,7 @@ main() {
     expect(classes, unorderedEquals(['foo', 'bar', 'baz']));
   });
 
-  test('mappedBy', () {
+  test('map', () {
     expect(makeClassSet().map((c) => c.toUpperCase()).toList(),
         unorderedEquals(['FOO', 'BAR', 'BAZ']));
   });

tests/html/element_test.dart

@@ -537,7 +537,7 @@ main() {
       expect(els[2], isHRElement);
     });
 
-    test('mappedBy', () {
+    test('map', () {
       var texts = getQueryAll().map((el) => el.text).toList();
       expect(texts, equals(['Dart!', 'Hello', '']));
     });

tests/html/streams_test.dart

@@ -191,7 +191,7 @@ main() {
     stream.where((_) => true).listen((_) {});
   });
 
-  test('mappedBy', () {
+  test('map', () {
     stream.map((_) => null).listen((_) {});
   });
 

tests/lib/async/stream_controller_async_test.dart

@@ -439,7 +439,7 @@ testRethrow() {
   }
 
   testStream("where", (s, act) => s.where(act));
-  testStream("mappedBy", (s, act) => s.map(act));
+  testStream("map", (s, act) => s.map(act));
   testStream("expand", (s, act) => s.expand(act));
   testStream("where", (s, act) => s.where(act));
   testStreamError("handleError", (s, act) => s.handleError(act));