Cherry-pick "Fix for issue 20605, set the application loader state back to running when all the def…

Source/bindings/dart/DartApplicationLoader.cpp

Index: Source/bindings/dart/DartApplicationLoader.cpp
diff --git a/Source/bindings/dart/DartApplicationLoader.cpp b/Source/bindings/dart/DartApplicationLoader.cpp
index 18e6d0f7e0e4a1039a01394d9ba129710e4e8a61..f63b87d28d84c80c872b331af14eaf59b375613c 100644
--- a/Source/bindings/dart/DartApplicationLoader.cpp
+++ b/Source/bindings/dart/DartApplicationLoader.cpp
@@ -267,23 +267,29 @@ void DartApplicationLoader::load(PassRefPtr<DartErrorEventDispatcher> errorEvent
 
     DartIsolateScope isolateScope(m_isolate);
     DartApiScope dartApiScope;
+    bool completeFutures = false;
 
-    // Indicate to the VM that all outstanding load requests are done. This
-    // call will finalize all the classes loaded so far and complete all
-    // deferred library load futures.
+    // Finalize classes and complete futures if there are any deferred loads.
+    if (!m_mainInvoked) {
+        RELEASE_ASSERT(m_state == Ready);
+    } else {
+        // We have already invoked the entry point on the main script URL at
+        // this point we will start running dart code again.
+        RELEASE_ASSERT(m_state == DeferredReady);
+        m_state = Running;
+        completeFutures = true;
+    }
     {
         V8Scope v8scope(DartDOMData::current());
-        Dart_Handle result = Dart_FinalizeLoading(true);
+        Dart_Handle result = Dart_FinalizeLoading(completeFutures);
         if (Dart_IsError(result)) {
             reportDartError(result);
             return;
         }
     }
-
     // Invoke the entry point on the main script URL if it has not yet been
     // invoked.
     if (!m_mainInvoked) {
-        RELEASE_ASSERT(m_state == Ready);
         // Call the entry point on the main script URL.
         callEntryPoint();
     }