Add Java wrapper for RenderFrameHost

content/public/android/java/src/org/chromium/content_public/browser/RenderFrameHost.java

+// Copyright 2017 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.
+
+package org.chromium.content_public.browser;
+
+/**
+ * The RenderFrameHost Java wrapper to allow communicating with the native RenderFrameHost object.
+ *
+ */
+public interface RenderFrameHost {
+    /**
+     * Deletes the FrameHost object.
+     */
+    void destroy();
+
+    /**
+     * @return Whether or not the native object associated with this FrameHost is destroyed.
+     */
+    boolean isDestroyed();
+
+    /**
+     * @return The WebContents associated with this iframe.
+     */
+    WebContents getWebContents();
+
+    /**
+     * Get the URL of the frame.
+     *
+     * @return The URL of the frame.
+     */
+    String getUrl();
+}