Teach SkyView path to draw a circle

sky/engine/bindings/builtin_sky.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "sky/engine/config.h"
 #include "sky/engine/bindings/builtin_sky.h"
 
 #include "sky/engine/bindings/builtin.h"
 #include "sky/engine/core/frame/LocalDOMWindow.h"
 #include "sky/engine/core/script/dom_dart_state.h"
+#include "sky/engine/core/view/View.h"
 #include "sky/engine/tonic/dart_error.h"
 
 namespace blink {
 
 BuiltinSky::BuiltinSky(DOMDartState* dart_state) {
   Builtin::SetNativeResolver(Builtin::kSkyLibrary);
   library_.Set(dart_state, Builtin::LoadAndCheckLibrary(Builtin::kSkyLibrary));
 }
 
 BuiltinSky::~BuiltinSky() {
 }
 
 void BuiltinSky::InstallWindow(DOMDartState* dart_state) {
   CHECK(!LogIfError(Dart_SetField(library_.value(),
     ToDart("window"),
     ToDart(dart_state->CurrentWindow()))));
   // TODO(abarth): Retain the document wrapper.
 }
 
+void BuiltinSky::InstallView(View* view) {
+  CHECK(!LogIfError(
+      Dart_SetField(library_.value(), ToDart("view"), ToDart(view))));
+}
+
 Dart_Handle BuiltinSky::GetClassByName(const char* class_name) {
   Dart_Handle name_handle = ToDart(class_name);
   Dart_Handle class_handle = Dart_GetType(library_.value(), name_handle, 0, nullptr);
   DCHECK(!Dart_IsError(class_handle)) << class_name;
   return class_handle;
 }
 
 }  // namespace blink