Add API 31 sources

Test: None
Change-Id: Ie45894f7a232b2a15e2439b2527ca1813f334cc5
diff --git a/java/util/Collection.annotated.java b/java/util/Collection.annotated.java
new file mode 100644
index 0000000..d2f425f
--- /dev/null
+++ b/java/util/Collection.annotated.java
@@ -0,0 +1,72 @@
+/*
+ * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+package java.util;
+
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+
+@SuppressWarnings({"unchecked", "deprecation", "all"})
+public interface Collection<E> extends java.lang.Iterable<E> {
+
+public int size();
+
+public boolean isEmpty();
+
+public boolean contains(@libcore.util.Nullable java.lang.Object o);
+
[email protected] public java.util.Iterator<@libcore.util.NullFromTypeParam E> iterator();
+
+public [email protected] Object @libcore.util.NonNull [] toArray();
+
+public <T> T @libcore.util.NonNull [] toArray(T @libcore.util.NonNull [] a);
+
+public boolean add(@libcore.util.NullFromTypeParam E e);
+
+public boolean remove(@libcore.util.Nullable java.lang.Object o);
+
+public boolean containsAll(@libcore.util.NonNull java.util.Collection<?> c);
+
+public boolean addAll(@libcore.util.NonNull java.util.Collection<? extends @libcore.util.NullFromTypeParam E> c);
+
+public boolean removeAll(@libcore.util.NonNull java.util.Collection<?> c);
+
+public default boolean removeIf(@libcore.util.NonNull java.util.function.Predicate<? super @libcore.util.NullFromTypeParam E> filter) { throw new RuntimeException("Stub!"); }
+
+public boolean retainAll(@libcore.util.NonNull java.util.Collection<?> c);
+
+public void clear();
+
+public boolean equals(@libcore.util.Nullable java.lang.Object o);
+
+public int hashCode();
+
[email protected] public default java.util.Spliterator<@libcore.util.NullFromTypeParam E> spliterator() { throw new RuntimeException("Stub!"); }
+
[email protected] public default java.util.stream.Stream<@libcore.util.NullFromTypeParam E> stream() { throw new RuntimeException("Stub!"); }
+
[email protected] public default java.util.stream.Stream<@libcore.util.NullFromTypeParam E> parallelStream() { throw new RuntimeException("Stub!"); }
+}