Emulate CompletableFuture

Change-Id: I06df161c6e5dbf3101a876b56874307b9b762ed4

user/super/com/google/gwt/emul/java/lang/InterruptedException.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package java.lang;
+
+/**
+ * Minimal emulation of {@link java.lang.InterruptedException}, that should
+ * only be used in method signatures. New GWT code should not reference this
+ * class at all. It is here only to ease the GWTification of common code.
+ *
+ */
+public class InterruptedException extends Exception {
+  public InterruptedException() { }
+
+  public InterruptedException(String message) {
+    super(message);
+  }
+}

user/super/com/google/gwt/emul/java/util/concurrent/Callable.java

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+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package java.util.concurrent;
+
+/**
+ * Emulation of Callable.
+ *
+ */
+@FunctionalInterface
+public interface Callable<V> {
+  V call() throws Exception;
+}

user/super/com/google/gwt/emul/java/util/concurrent/CancellationException.java

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+/*
+ * Copyright 2016 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package java.util.concurrent;
+
+/**
+ * Emulation of CancellationException.
+ */
+public class CancellationException extends IllegalStateException {
+
+  public CancellationException() {}
+
+  public CancellationException(String message) {
+    super(message);
+  }
+}