Expose WindowAndroid from WebContents.

content/browser/web_contents/web_contents_android.cc

 // Copyright 2013 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 "content/browser/web_contents/web_contents_android.h"
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
@@ skipping 22 matching lines @@
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/message_port_provider.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_switches.h"
 #include "jni/WebContentsImpl_jni.h"
 #include "net/android/network_library.h"
 #include "ui/accessibility/ax_node_data.h"
 #include "ui/android/overscroll_refresh_handler.h"
+#include "ui/android/window_android.h"
 #include "ui/gfx/android/java_bitmap.h"
 #include "ui/gfx/geometry/rect.h"
 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF8;
 using base::android::ConvertJavaStringToUTF16;
 using base::android::ConvertUTF8ToJavaString;
 using base::android::ConvertUTF16ToJavaString;
 using base::android::JavaParamRef;
 using base::android::JavaRef;
@@ skipping 216 matching lines @@
       g_allocated_web_contents_androids.Get().end());
   g_allocated_web_contents_androids.Get().erase(this);
   Java_WebContentsImpl_clearNativePtr(AttachCurrentThread(), obj_);
 }
 
 base::android::ScopedJavaLocalRef<jobject>
 WebContentsAndroid::GetJavaObject() {
   return base::android::ScopedJavaLocalRef<jobject>(obj_);
 }
 
+base::android::ScopedJavaLocalRef<jobject>
+WebContentsAndroid::GetTopLevelNativeWindow(JNIEnv* env,
+                                            const JavaParamRef<jobject>& obj) {
+  ui::WindowAndroid* window_android = web_contents_->GetTopLevelNativeWindow();
+  if (!window_android)
+    return ScopedJavaLocalRef<jobject>();

[boliu, 2017/02/02 03:34:00]

nullptr should work

[Ted C, 2017/03/03 20:55:26]

Done.

+  return window_android->GetJavaObject();
+}
+
 ScopedJavaLocalRef<jstring> WebContentsAndroid::GetTitle(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) const {
   return base::android::ConvertUTF16ToJavaString(env,
                                                  web_contents_->GetTitle());
 }
 
 ScopedJavaLocalRef<jstring> WebContentsAndroid::GetVisibleURL(
     JNIEnv* env,
     const JavaParamRef<jobject>& obj) const {
@@ skipping 445 matching lines @@
       env, obj, callback, id, http_status_code, jurl, jbitmaps, jsizes);
 }
 
 void WebContentsAndroid::SetMediaSession(
     const ScopedJavaLocalRef<jobject>& j_media_session) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_WebContentsImpl_setMediaSession(env, obj_, j_media_session);
 }
 
 }  // namespace content