Upstream chromium side of modal dialogs for webview.

chrome/browser/android/chrome_web_contents_delegate_android.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 "chrome/browser/android/chrome_web_contents_delegate_android.h"
 
 #include "base/android/jni_android.h"
 #include "chrome/browser/file_select_helper.h"
 #include "chrome/browser/ui/find_bar/find_match_rects_details.h"
 #include "chrome/browser/ui/find_bar/find_notification_details.h"
 #include "chrome/browser/ui/find_bar/find_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents.h"
+#include "chrome/browser/ui/app_modal_dialogs/javascript_dialog_creator.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_source.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/file_chooser_params.h"
 #include "jni/ChromeWebContentsDelegateAndroid_jni.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/rect_f.h"
 
@@ skipping 199 matching lines @@
                      jrects.obj(),
                      jactive_rect.obj()));
   DCHECK(!details_object.is_null());
 
   Java_ChromeWebContentsDelegateAndroid_onFindMatchRectsAvailable(
       env,
       obj.obj(),
       details_object.obj());
 }
 
+content::JavaScriptDialogCreator*
+ChromeWebContentsDelegateAndroid::GetJavaScriptDialogCreator() {
+  return GetJavaScriptDialogCreatorInstance();
+}
+
 }  // namespace android
 }  // namespace chrome