dart2js: Add newline in minified mode.

pkg/compiler/lib/src/js_emitter/old_emitter/emitter.dart

 // Copyright (c) 2014, 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.
 
 part of dart2js.js_emitter;
 
 
 class OldEmitter implements Emitter {
   final Compiler compiler;
   final CodeEmitterTask task;
@@ skipping 626 matching lines @@
                                       constructList(program.metadata)]),
               js.statement('# = #;', [typesAccess, constructList(types)])]),
               compiler, monitor: compiler.dumpInfoTask));
       output.add(n);
     } else if (types != null) {
       output.addBuffer(
           jsAst.prettyPrint(
               js.statement('var ${namer.deferredTypesName} = #;',
                            constructList(types)),
               compiler, monitor: compiler.dumpInfoTask));
-      output.add(n);
+      if (compiler.enableMinification) {
+        output.add('\n');

[herhut, 2015/04/10 13:01:57]

How about output.add(N)? That will turn into ";\n" in non-minified and '\n' in
minified mode. The ';' from the js.statement is probably swallowed anyway, no?

[zarah, 2015/04/10 13:05:54]

No, then in minified mode there will be two ';'s. As agreed it stays like this
then.

[zarah, 2015/04/10 13:20:24]

sorry, non-minified, just for the record.

+      }
     }
   }
 
   void emitCompileTimeConstants(CodeOutput output,
                                 List<Constant> constants,
                                 {bool isMainFragment}) {
     assert(isMainFragment != null);
 
     if (constants.isEmpty) return;
     CodeOutput constantOutput = output;
@@ skipping 1216 matching lines @@
     for (Element element in compiler.enqueuer.codegen.newlyEnqueuedElements) {
       if (element.isInstanceMember) {
         cachedClassBuilders.remove(element.enclosingClass);
 
         nativeEmitter.cachedBuilders.remove(element.enclosingClass);
 
       }
     }
   }
 }