Rework library and class view pages.

runtime/bin/vmservice/client/lib/src/elements/library_view.dart

Index: runtime/bin/vmservice/client/lib/src/elements/library_view.dart
diff --git a/runtime/bin/vmservice/client/lib/src/elements/library_view.dart b/runtime/bin/vmservice/client/lib/src/elements/library_view.dart
index 398c5089804df00f49f1a86be7c6656c02eeacfa..f22e019f73b2e4ec0baf02e92cf13c0b4b29789a 100644
--- a/runtime/bin/vmservice/client/lib/src/elements/library_view.dart
+++ b/runtime/bin/vmservice/client/lib/src/elements/library_view.dart
@@ -4,17 +4,23 @@
 
 library library_view_element;
 
+import 'dart:async';
 import 'observatory_element.dart';
 import 'package:observatory/service.dart';
-
 import 'package:polymer/polymer.dart';
 
+
 @CustomTag('library-view')
 class LibraryViewElement extends ObservatoryElement {
   @published ServiceMap library;
 
   LibraryViewElement.created() : super.created();
 
+  Future<ServiceObject> eval(String text) {
+    return library.isolate.get(
+        library.id + "/eval?expr=${Uri.encodeComponent(text)}");
+  }
+
   void refresh(var done) {
     library.reload().whenComplete(done);
   }