DialogSurfaceManager implementation.

media/base/android/java/src/org/chromium/media/AndroidOverlayCallback.java

+// Copyright 2016 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.
+
+package org.chromium.media;
+
+import android.os.RemoteException;
+import android.view.Surface;
+
+import org.chromium.base.annotations.CalledByNative;
+import org.chromium.base.annotations.JNINamespace;
+
+/**
+ * Callback helper for native.  This works with our JNI implementation to hop
+ * to the right thread for callbacks, and handle async deletion of the native
+ * object.  It directly implemens the aidl interface also.
+ */
+@JNINamespace("media")
+class AndroidOverlayCallback extends IAndroidOverlayCallback.Stub {
+    private final long mNativeId;
+
+    public AndroidOverlayCallback(long nativeId) {

[boliu, 2017/02/08 00:01:58]

private

+        mNativeId = nativeId;
+    }
+
+    @CalledByNative
+    public static AndroidOverlayCallback create(long nativeId) {

[boliu, 2017/02/08 00:01:58]

private

+        return new AndroidOverlayCallback(nativeId);
+    }
+
+    @Override
+    public void onCreated(Surface surface) {
+        nativeOnAndroidOverlayCallbackCreated(mNativeId, surface);
+    }
+
+    @Override
+    public void onDestroyed(IAndroidOverlayCompletion completion) {
+        nativeOnAndroidOverlayCallbackDestroyed(mNativeId, completion);
+    }
+
+    @CalledByNative
+    private static void signalCompletion(IAndroidOverlayCompletion completion) {
+        try {
+            if (completion != null) completion.signalComplete();
+        } catch (RemoteException e) {

[boliu, 2017/02/08 00:01:58]

Feel free to Log.d errors like this, Log.d is stripped out of release builds

+        }
+    }
+
+    private static native void nativeOnAndroidOverlayCallbackCreated(long id, Surface surface);
+    private static native void nativeOnAndroidOverlayCallbackDestroyed(
+            long id, IAndroidOverlayCompletion completion);
+};