dart2js: minify 'static:' tag

pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart

Index: pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart
diff --git a/pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart b/pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart
index 9ad63abc6e2a442876f3511976d347cffae80069..ecd8a4b681fc090fb2d12aa96b573f7862bb9a50 100644
--- a/pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart
+++ b/pkg/compiler/lib/src/js_emitter/full_emitter/setup_program_builder.dart
@@ -102,6 +102,8 @@ jsAst.Statement buildSetupProgram(Program program, Compiler compiler,
      'mangledNames': mangledNamesAccess,
      'mangledGlobalNames': mangledGlobalNamesAccess,
      'statics': staticsAccess,
+     'staticsPropertyName': namer.staticsPropertyName,
+     'staticsPropertyNameString': js.quoteName(namer.staticsPropertyName),
      'typeInformation': typeInformationAccess,
      'globalFunctions': globalFunctionsAccess,
      'enabledInvokeOn': compiler.enabledInvokeOn,
@@ -526,10 +528,10 @@ function $setupProgramName(programData, typesOffset) {
       for (var i = 0; i < properties.length; i++) {
         var property = properties[i];
         var firstChar = property.charCodeAt(0);
-        if (property === "static") {
-          processStatics(#statics[cls] = descriptor.static,
+        if (property === #staticsPropertyNameString) {
+          processStatics(#statics[cls] = descriptor.#staticsPropertyName,
                          processedClasses);
-          delete descriptor.static;
+          delete descriptor.#staticsPropertyName;
         } else if (firstChar === 43) { // 43 is "+".
           mangledNames[previousProperty] = property.substring(1);
           var flag = descriptor[property];