Add a content-security-policy (CSP) flag.

lib/compiler/implementation/js_backend/native_emitter.dart

Index: lib/compiler/implementation/js_backend/native_emitter.dart
diff --git a/lib/compiler/implementation/js_backend/native_emitter.dart b/lib/compiler/implementation/js_backend/native_emitter.dart
index 4747a6e12af203703bd04f5b1b6abf4636328254..d66a30eda4c258db18e0259d8aa7d74e44f62386 100644
--- a/lib/compiler/implementation/js_backend/native_emitter.dart
+++ b/lib/compiler/implementation/js_backend/native_emitter.dart
@@ -95,13 +95,19 @@ class NativeEmitter {
 
   String get defineNativeClassFunction {
     return """
-function(cls, fields, methods) {
+function(cls, desc) {
+  var fields = desc[''] || [];
   var generateGetterSetter = ${emitter.generateGetterSetterFunction};
   for (var i = 0; i < fields.length; i++) {
-    generateGetterSetter(fields[i], methods);
+    generateGetterSetter(fields[i], desc);
   }
-  for (var method in methods) {
-    $dynamicName(method)[cls] = methods[method];
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  for (var method in desc) {
+    if (method !== '') {
+      if (hasOwnProperty.call(desc, method)) {
+        $dynamicName(method)[cls] = desc[method];
+      }
+    }
   }
 }""";
   }
@@ -157,23 +163,39 @@ function(cls, fields, methods) {
     }
 
     CodeBuffer fieldBuffer = new CodeBuffer();
-    List<String> checkedSetters =
-        emitter.emitClassFields(classElement, fieldBuffer);
+    CodeBuffer getterSetterBuffer = new CodeBuffer();
+
+    emitter.emitClassFields(classElement, fieldBuffer);
+    emitter.emitClassGettersSetters(classElement, getterSetterBuffer,
+                                    omitLeadingComma: true);
 
     CodeBuffer methodBuffer = new CodeBuffer();
     emitter.emitInstanceMembers(classElement, methodBuffer, false);
 
-    if (methodBuffer.isEmpty() && fieldBuffer.isEmpty()) return;
+    if (methodBuffer.isEmpty()
+        && fieldBuffer.isEmpty()
+        && getterSetterBuffer.isEmpty()) {
+      return;
+    }
 
     String nativeName = toNativeName(classElement);
-    nativeBuffer.add("$defineNativeClassName('$nativeName', [");
-    nativeBuffer.add(fieldBuffer);
-    nativeBuffer.add('], {');
-    if (!checkedSetters.isEmpty()) {
-      nativeBuffer.add('${Strings.join(checkedSetters, ",\n")}');
-      nativeBuffer.add(',\n');
+    nativeBuffer.add("$defineNativeClassName('$nativeName', ");
+    nativeBuffer.add('{');
+    bool firstInMap = true;
+    if (!fieldBuffer.isEmpty()) {
+      firstInMap = false;
+      nativeBuffer.add(fieldBuffer);
+    }
+    if (!getterSetterBuffer.isEmpty()) {
+      if (!firstInMap) nativeBuffer.add(",");
+      firstInMap = false;
+      nativeBuffer.add("\n ");
+      nativeBuffer.add(getterSetterBuffer);
+    }
+    if (!methodBuffer.isEmpty()) {
+      if (!firstInMap) nativeBuffer.add(",");
+      nativeBuffer.add(methodBuffer);
     }
-    nativeBuffer.add(methodBuffer);
     nativeBuffer.add('\n});\n\n');
 
     classesWithDynamicDispatch.add(classElement);