[Android] Refactor NativeView to be able to use it for AutofillDialog.

android_webview/java/src/org/chromium/android_webview/AwNativeWindow.java

Index: android_webview/java/src/org/chromium/android_webview/AwNativeWindow.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwNativeWindow.java b/android_webview/java/src/org/chromium/android_webview/AwNativeWindow.java
deleted file mode 100644
index 31f77dc7d49988e0e1d707e68e1d05c10902bb99..0000000000000000000000000000000000000000
--- a/android_webview/java/src/org/chromium/android_webview/AwNativeWindow.java
+++ /dev/null
@@ -1,28 +0,0 @@
-// 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.
-
-package org.chromium.android_webview;
-
-import android.content.Context;
-import android.content.Intent;
-
-import org.chromium.ui.gfx.NativeWindow;
-
-public class AwNativeWindow extends NativeWindow {
-    public AwNativeWindow(Context context) {
-        super(context);
-    }
-
-    // The following stubs are required for displaying a file picker which is
-    // unsupported in the WebView.
-    public void sendBroadcast(Intent intent) {
-    }
-
-    public boolean showIntent(Intent intent, IntentCallback callback, String error) {
-        return false;
-    }
-
-    public void showError(String error) {
-    }
-}