Breaking Change: Support @JS at library level

sdk/lib/js/dartium/js_dartium.dart

 // Copyright (c) 2013, 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.
 
 /**
  * Support for interoperating with JavaScript.
  *
  * This library provides access to JavaScript objects from Dart, allowing
  * Dart code to get and set properties, and call methods of JavaScript objects
  * and invoke JavaScript functions. The library takes care of converting
@@ skipping 488 matching lines @@
   return false;
 }
 
 List<String> _generateExternalMethods(List<String> libraryPaths) {
   var staticCodegen = <String>[];
 
   if (libraryPaths.length == 0) {
     mirrors.currentMirrorSystem().libraries.forEach((uri, library) {
       var library_name = "${uri.scheme}:${uri.path}";
       if (cached_patches.containsKey(library_name)) {
+        // Use the pre-generated patch files for DOM dart:nnnn libraries.
         var patch = cached_patches[library_name];
         staticCodegen.addAll(patch);
-      } else {
+      } else if (_hasJsName(library)) {
+        // Library marked with @JS
         _generateLibraryCodegen(uri, library, staticCodegen);
       }
     });    // End of library foreach
   } else {
     // Used to generate cached_patches.dart file for all IDL generated dart:
     // files to the WebKit DOM.
     for (var library_name in libraryPaths) {
       var parts = library_name.split(':');
       var uri = new Uri(scheme: parts[0], path: parts[1]);
       var library = mirrors.currentMirrorSystem().libraries[uri];
       _generateLibraryCodegen(uri, library, staticCodegen);
     }
   }
 
   return staticCodegen;
 }
 
 _generateLibraryCodegen(uri, library, staticCodegen) {
     // Is it a dart generated library?
     var dartLibrary = uri.scheme == 'dart';  
 
     var sb = new StringBuffer();
     String jsLibraryName = _getJsName(library);
-    library.declarations.forEach((name, declaration) {
+
+    // Sort by patch file by its declaration name.
+    var sortedDeclKeys = library.declarations.keys.toList();
+    sortedDeclKeys.sort((a, b) => mirrors.MirrorSystem.getName(a).compareTo(mirrors.MirrorSystem.getName(b)));
+
+    sortedDeclKeys.forEach((name) {
+      var declaration = library.declarations[name];
       if (declaration is mirrors.MethodMirror) {
         if ((_hasJsName(declaration) || jsLibraryName != null) &&
             _isExternal(declaration)) {
           addMemberHelper(declaration, jsLibraryName, sb);
         }
       } else if (declaration is mirrors.ClassMirror) {
         mirrors.ClassMirror clazz = declaration;
         var isDom = dartLibrary ? hasDomName(clazz) : false;
         var isJsInterop = _hasJsName(clazz);
         if (isDom || isJsInterop) {
@@ skipping 1025 matching lines @@
     if (ret == null) {
       // TODO(jacobr): we could optimize this.
       ret = JSFunction._createWithThis(f);
       _interopCaptureThisExpando[f] = ret;
     }
     return ret;
   }
 }
 
 debugPrint(_) {}