Upstream chromium side of modal dialogs for webview.

android_webview/native/js_result_handler.h

Index: android_webview/native/js_result_handler.h
diff --git a/android_webview/native/js_result_handler.h b/android_webview/native/js_result_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..c85b116e1c559841059aaaea9f21295f09c7cddd
--- /dev/null
+++ b/android_webview/native/js_result_handler.h
@@ -0,0 +1,23 @@
+// 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.
+
+#ifndef ANDROID_WEBVIEW_NATIVE_JS_RESULT_HANDLER_H_
+#define ANDROID_WEBVIEW_NATIVE_JS_RESULT_HANDLER_H_
+
+#include "base/android/jni_helper.h"
+#include "base/android/scoped_java_ref.h"
+#include "content/public/browser/javascript_dialogs.h"
+
+namespace android_webview {
+
+bool RegisterJsResultHandler(JNIEnv* env);
+
+base::android::ScopedJavaLocalRef<jobject> createJsResultHandler(
+    JNIEnv* env,
+    const content::JavaScriptDialogCreator::DialogClosedCallback*
+        native_dialog_pointer);
+
+}  // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_NATIVE_JS_RESULT_HANDLER_H_