Teach SkyView path to draw a circle

sky/engine/core/script/dart_controller.cc

 // Copyright 2015 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/core/script/dart_controller.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 330 matching lines @@
     dart_state()->class_library().set_provider(builtin_sky_.get());
 
     if (dart_state()->document())
       builtin_sky_->InstallWindow(dart_state());
 
     EnsureHandleWatcherStarted();
   }
   Dart_ExitIsolate();
 }
 
+void DartController::InstallView(View* view) {
+  DartIsolateScope isolate_scope(dart_state()->isolate());
+  DartApiScope dart_api_scope;
+
+  builtin_sky_->InstallView(view);
+}
+
 void DartController::ClearForClose() {
   // Don't use a DartIsolateScope here since we never exit the isolate.
   Dart_EnterIsolate(dom_dart_state_->isolate());
   Dart_ShutdownIsolate();
   dom_dart_state_.clear();
 }
 
 void DartController::InitVM() {
   int argc = 0;
   const char** argv = nullptr;
@@ skipping 13 matching lines @@
                         nullptr,  // Isolate interrupt callback.
                         UnhandledExceptionCallback, IsolateShutdownCallback,
                         // File IO callbacks.
                         nullptr, nullptr, nullptr, nullptr, nullptr));
   // Wait for load port- ensures handle watcher and service isolates are
   // running.
   Dart_ServiceWaitForLoadPort();
 }
 
 } // namespace blink