Refactor the Android port to allow access to the chrome layer.

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 "content/public/browser/web_contents.h"
+#include "content/public/common/file_chooser_params.h"
+
+using base::android::AttachCurrentThread;
+using base::android::GetClass;
+using base::android::ScopedJavaLocalRef;
+using content::FileChooserParams;
+using content::WebContents;
+
+namespace chrome {
+namespace android {
+
+ChromeWebContentsDelegateAndroid::ChromeWebContentsDelegateAndroid(JNIEnv* env,
+                                                                   jobject obj)
+    : WebContentsDelegateAndroid(env, obj) {
+}
+
+ChromeWebContentsDelegateAndroid::~ChromeWebContentsDelegateAndroid() {
+}
+
+void ChromeWebContentsDelegateAndroid::RunFileChooser(
+    WebContents* web_contents,
+    const FileChooserParams& params) {
+  FileSelectHelper::RunFileChooser(web_contents, params);
+}
+
+}  // namespace android
+}  // namespace chrome
+