Reapply dom_deprecated removal with non-editor breaking change.

lib/compiler/implementation/apiimpl.dart

 // Copyright (c) 2012, 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.
 
 #library('leg_apiimpl');
 
 #import('dart:uri');
 
 #import('../compiler.dart', prefix: 'api');
 #import('leg.dart', prefix: 'leg');
@@ skipping 88 matching lines @@
       default: return uri;
     }
   }
 
   Uri translateDartUri(Uri uri, tree.Node node) {
     String path = lookupLibraryPath(uri.path);
     if (path === null || LIBRARIES[uri.path].category == "Internal") {
       reportError(node, 'library not found ${uri}');
       return null;
     }
-    if (uri.path == 'dom_deprecated' ||
-        uri.path == 'html' ||
+    if (uri.path == 'html' ||
         uri.path == 'io') {
       // TODO(ahe): Get rid of mockableLibraryUsed when test.dart
       // supports this use case better.
       mockableLibraryUsed = true;
     }
     return libraryRoot.resolve(path);
   }
 
   Uri resolvePatchUri(String dartLibraryPath) {
     String patchPath = lookupPatchPath(dartLibraryPath);
@@ skipping 24 matching lines @@
       handler(translateUri(span.uri, null), span.begin, span.end,
               message, kind);
     }
   }
 
   bool get isMockCompilation {
     return mockableLibraryUsed
       && (options.indexOf('--allow-mock-compilation') !== -1);
   }
 }