Upstreaming SelectFileDialog for Android

ui/gfx/android/window_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 "window_android.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_helper.h"
+#include "base/android/scoped_java_ref.h"
+#include "jni/NativeWindow_jni.h"
+
+namespace ui {
+
+using base::android::AttachCurrentThread;
+using base::android::ScopedJavaLocalRef;
+
+WindowAndroid::WindowAndroid(JNIEnv* env, jobject obj)
+  : weak_java_window_(env, obj) {
+}
+
+void WindowAndroid::Destroy(JNIEnv* env, jobject obj) {

[sky, 2012/09/17 20:53:44]

I'm not familiar with the java side, but how come it can't 'delete this'
directly?

[aurimas (slooooooooow), 2012/09/17 22:20:48]

Sadly it cannot do it directly, java has to call the native destroy function.

+  delete this;
+}
+
+ScopedJavaLocalRef<jobject> WindowAndroid::GetJavaObject() {
+  JNIEnv* env = AttachCurrentThread();
+  return weak_java_window_.get(env);
+}
+
+bool WindowAndroid::RegisterWindowAndroid(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+WindowAndroid::~WindowAndroid() {
+}
+
+// ----------------------------------------------------------------------------
+// Native JNI methods
+// ----------------------------------------------------------------------------
+
+jint Init(JNIEnv* env, jobject obj) {
+  WindowAndroid* window = new WindowAndroid(env, obj);
+  return reinterpret_cast<jint>(window);
+}
+
+}  // namespace ui