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

chrome/browser/android/chrome_web_contents_delegate_android.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 CHROME_BROWSER_ANDROID_CHROME_WEB_CONTENTS_DELEGATE_ANDROID_H_
+#define CHROME_BROWSER_ANDROID_CHROME_WEB_CONTENTS_DELEGATE_ANDROID_H_
+
+#include <jni.h>
+
+#include "chrome/browser/component/web_contents_delegate_android/web_contents_delegate_android.h"
+
+namespace content {
+struct FileChooserParams;
+class WebContents;
+}
+
+namespace chrome {
+namespace android {
+
+// Chromium Android specific WebContentsDelegate.
+// Should contain any WebContentsDelegate implementations required by
+// the Chromium Android port but not to be shared with WebView.
+class ChromeWebContentsDelegateAndroid
+    : public web_contents_delegate_android::WebContentsDelegateAndroid {
+ public:
+  ChromeWebContentsDelegateAndroid(JNIEnv* env, jobject obj);
+  virtual ~ChromeWebContentsDelegateAndroid();
+
+  virtual void RunFileChooser(content::WebContents* web_contents,
+                              const content::FileChooserParams& params)
+                              OVERRIDE;
+};
+
+}  // namespace android
+}  // namespace chrome
+
+#endif  // CHROME_BROWSER_ANDROID_CHROME_WEB_CONTENTS_DELEGATE_ANDROID_H_