pt 1 in reviving the android build (copied from pm 28a1, wish me luck)

mobile/android/base/java/org/mozilla/gecko/RemotePresentationService.java

@@ -0,0 +1,150 @@
+/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
+ * vim: ts=4 sw=4 expandtab:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.gecko;
+
+import org.json.JSONObject;
+import org.json.JSONException;
+
+import org.json.JSONObject;
+import org.mozilla.gecko.AppConstants.Versions;
+import org.mozilla.gecko.GeckoAppShell;
+import org.mozilla.gecko.PresentationView;
+import org.mozilla.gecko.R;
+import org.mozilla.gecko.ScreenManagerHelper;
+import org.mozilla.gecko.annotation.JNITarget;
+import org.mozilla.gecko.annotation.ReflectionTarget;
+import org.mozilla.gecko.annotation.WrapForJNI;
+import org.mozilla.gecko.gfx.LayerView;
+import org.mozilla.gecko.util.EventCallback;
+import org.mozilla.gecko.util.NativeEventListener;
+import org.mozilla.gecko.util.NativeJSObject;
+
+import com.google.android.gms.cast.CastMediaControlIntent;
+import com.google.android.gms.cast.CastPresentation;
+import com.google.android.gms.cast.CastRemoteDisplayLocalService;
+import com.google.android.gms.common.ConnectionResult;
+import com.google.android.gms.common.GooglePlayServicesUtil;
+
+import android.app.Activity;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+import android.support.v7.media.MediaControlIntent;
+import android.support.v7.media.MediaRouteSelector;
+import android.support.v7.media.MediaRouter.RouteInfo;
+import android.support.v7.media.MediaRouter;
+import android.util.DisplayMetrics;
+import android.util.Log;
+import android.view.Display;
+import android.view.ViewGroup.LayoutParams;
+import android.view.WindowManager;
+import android.widget.RelativeLayout;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/*
+ * Service to keep the remote display running even when the app goes into the background
+ */
+public class RemotePresentationService extends CastRemoteDisplayLocalService {
+
+    private static final String LOGTAG = "RemotePresentationService";
+    private CastPresentation presentation;
+    private String deviceId;
+    private int screenId;
+
+    public void setDeviceId(String deviceId) {
+        this.deviceId = deviceId;
+    }
+
+    public String getDeviceId() {
+        return deviceId;
+    }
+
+    @Override
+    public void onCreatePresentation(Display display) {
+        createPresentation();
+    }
+
+    @Override
+    public void onDismissPresentation() {
+        dismissPresentation();
+    }
+
+    private void dismissPresentation() {
+        if (presentation != null) {
+            presentation.dismiss();
+            presentation = null;
+            ScreenManagerHelper.removeDisplay(screenId);
+            MediaPlayerManager.getInstance().setPresentationMode(false);
+        }
+    }
+
+    private void createPresentation() {
+        dismissPresentation();
+
+        MediaPlayerManager.getInstance().setPresentationMode(true);
+
+        DisplayMetrics metrics = new DisplayMetrics();
+        getDisplay().getMetrics(metrics);
+        screenId = ScreenManagerHelper.addDisplay(ScreenManagerHelper.DISPLAY_VIRTUAL,
+                                                  metrics.widthPixels,
+                                                  metrics.heightPixels,
+                                                  metrics.density);
+
+        VirtualPresentation virtualPresentation = new VirtualPresentation(this, getDisplay());
+        virtualPresentation.setDeviceId(deviceId);
+        virtualPresentation.setScreenId(screenId);
+        presentation = (CastPresentation) virtualPresentation;
+
+        try {
+            presentation.show();
+        } catch (WindowManager.InvalidDisplayException ex) {
+            Log.e(LOGTAG, "Unable to show presentation, display was removed.", ex);
+            dismissPresentation();
+        }
+    }
+}
+
+class VirtualPresentation extends CastPresentation {
+    private final String LOGTAG = "VirtualPresentation";
+    private RelativeLayout layout;
+    private PresentationView view;
+    private String deviceId;
+    private int screenId;
+
+    public VirtualPresentation(Context context, Display display) {
+        super(context, display);
+    }
+
+    public void setDeviceId(String deviceId) { this.deviceId = deviceId; }
+    public void setScreenId(int screenId) { this.screenId = screenId; }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        /*
+         * NOTICE: The context get from getContext() is different to the context
+         * of the application. Presentaion has its own context to get correct
+         * resources.
+         */
+
+        // Create new PresentationView
+        view = new PresentationView(getContext(), deviceId, screenId);
+        view.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
+                                              LayoutParams.MATCH_PARENT));
+
+        // Create new layout to put the GeckoView
+        layout = new RelativeLayout(getContext());
+        layout.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,
+                                                LayoutParams.MATCH_PARENT));
+        layout.addView(view);
+
+        setContentView(layout);
+    }
+}