Make PaymentRequestImpl work with RenderFrameHost

content/public/android/java/src/org/chromium/content/browser/framehost/RenderFrameHostImpl.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.browser.framehost;
 
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.content_public.browser.RenderFrameHost;
 
@@ skipping 17 matching lines @@
     private static RenderFrameHostImpl create(
             long nativeRenderFrameHostAndroid, RenderFrameHostDelegate delegate) {
         return new RenderFrameHostImpl(nativeRenderFrameHostAndroid, delegate);
     }
 
     @CalledByNative
     private void clearNativePtr() {
         mNativeRenderFrameHostAndroid = 0;
     }
 
+    /**
+     * Get the delegate associated with this RenderFrameHost.
+     *
+     * @return The delegate associated with this RenderFrameHost.
+     */
     public RenderFrameHostDelegate getRenderFrameHostDelegate() {
         return mDelegate;
     }
 
     @Override
     public String getLastCommittedURL() {
         if (mNativeRenderFrameHostAndroid == 0) return null;
         return nativeGetLastCommittedURL(mNativeRenderFrameHostAndroid);
     }
 
     private native String nativeGetLastCommittedURL(long nativeRenderFrameHostAndroid);
 }