Cleanup CanDownload WebContentsDelegate API

android_webview/native/aw_web_contents_delegate.cc

 // Copyright (c) 2012 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.
 
 #include "android_webview/native/aw_web_contents_delegate.h"
 
 #include "android_webview/browser/aw_javascript_dialog_manager.h"
 #include "android_webview/browser/find_helper.h"
 #include "android_webview/native/aw_contents.h"
 #include "android_webview/native/aw_contents_io_thread_client_impl.h"
@@ skipping 58 matching lines @@
     return;
 
   aw_contents->GetFindHelper()->HandleFindReply(request_id,
                                                 number_of_matches,
                                                 active_match_ordinal,
                                                 final_update);
 }
 
 void AwWebContentsDelegate::CanDownload(
     content::RenderViewHost* source,
-    int request_id,
+    const GURL& url,
     const std::string& request_method,
     const base::Callback<void(bool)>& callback) {
   // Android webview intercepts download in its resource dispatcher host
   // delegate, so should not reach here.
   NOTREACHED();
   callback.Run(false);
 }
 
 void AwWebContentsDelegate::RunFileChooser(WebContents* web_contents,
                                            const FileChooserParams& params) {
@@ skipping 150 matching lines @@
   DVLOG(0) << "File Chooser result: mode = " << mode
            << ", file paths = " << JoinString(file_path_str, ":");
   rvh->FilesSelectedInChooser(files, mode);
 }
 
 bool RegisterAwWebContentsDelegate(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview