cleanup(core): fix dart analyzer warnings

modules/core/src/compiler/pipeline/view_splitter.js

@@ -45,7 +45,9 @@ export class ViewSplitter extends CompileStep {
       if (current.element instanceof TemplateElement) {
         if (!current.isViewRoot) {
           var viewRoot = new CompileElement(DOM.createTemplate(''));
-          this._moveChildNodes(current.element.content, viewRoot.element.content);
+          var currentElement:TemplateElement = current.element;
+          var viewRootElement:TemplateElement = viewRoot.element;
+          this._moveChildNodes(currentElement.content, viewRootElement.content);
           viewRoot.isViewRoot = true;
           control.addChild(viewRoot);
         }

modules/core/src/compiler/view.js

@@ -38,7 +38,7 @@ export class View {
   viewPorts: List<ViewPort>;
   preBuiltObjects: List<PreBuiltObjects>;
   proto: ProtoView;
-  context: Object;
+  context: any;
   contextWithLocals:ContextWithVariableBindings;
   constructor(proto:ProtoView, nodes:List<Node>, protoRecordRange:ProtoRecordRange, protoContextLocals:Map) {
     this.proto = proto;