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

android_webview/native/aw_web_contents_delegate.h

+// 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_AW_WEB_CONTENTS_DELEGATE_H_
+#define ANDROID_WEBVIEW_NATIVE_AW_WEB_CONTENTS_DELEGATE_H_
+
+#include <jni.h>
+
+#include "chrome/browser/component/web_contents_delegate_android/web_contents_delegate_android.h"
+
+namespace android_webview {
+
+// WebView specific WebContentsDelegate.
+// Should contain WebContentsDelegate code required by WebView that should not
+// be part of the Chromium Android port.
+class AwWebContentsDelegate
+    : public web_contents_delegate_android::WebContentsDelegateAndroid {
+ public:
+  AwWebContentsDelegate(JNIEnv* env, jobject obj);
+  virtual ~AwWebContentsDelegate();
+};
+
+}  // namespace android_webview
+
+#endif  // ANDROID_WEBVIEW_NATIVE_AW_WEB_CONTENTS_DELEGATE_H_