Upstreaming SelectFileDialog for Android

ui/gfx/android/window_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 UI_GFX_ANDROID_WINDOW_ANDROID_H_
+#define UI_GFX_ANDROID_WINDOW_ANDROID_H_
+
+#include <jni.h>
+#include "base/android/jni_helper.h"
+#include "base/android/scoped_java_ref.h"
+
+namespace ui {
+
+// Android implementation of the activity window.
+class WindowAndroid {
+ public:
+  WindowAndroid(JNIEnv* env, jobject obj);
+
+  void Destroy(JNIEnv* env, jobject obj);
+
+  base::android::ScopedJavaLocalRef<jobject> GetJavaObject();
+
+  static bool RegisterWindowAndroid(JNIEnv* env);
+
+ private:
+  ~WindowAndroid();
+
+  JavaObjectWeakGlobalRef weak_java_window_;
+
+  DISALLOW_COPY_AND_ASSIGN(WindowAndroid);
+};
+
+}  // namespace ui
+
+#endif  // UI_GFX_ANDROID_WINDOW_ANDROID_H_