Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/prerender/PrerenderAPITestActivity.java

+// Copyright 2015 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.chrome.browser.prerender;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.ServiceConnection;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.Messenger;
+import android.os.RemoteException;
+import android.view.View;
+import android.view.View.OnClickListener;
+import android.widget.EditText;
+
+import com.google.android.apps.chrome.R;
+
+/**
+ * An activity for testing the prerender API. This can test whether
+ * ChromePrerenderService warms up Chrome and prerender a given url
+ * successfully.
+ */
+public class PrerenderAPITestActivity extends Activity implements OnClickListener {
+    private static final String DEFAULT_URL = "http://www.nytimes.com";
+    static final int MSG_PRERENDER_URL = 1;
+    static final String KEY_PREPRENDERED_URL = "url_to_preprender";
+    private String mUrl;
+
+    Messenger mService = null;
+
+    private final ServiceConnection mConnection = new ServiceConnection() {
+        @Override
+        public void onServiceConnected(ComponentName className, IBinder service) {
+            mService = new Messenger(service);
+        }
+
+        @Override
+        public void onServiceDisconnected(ComponentName className) {
+            mService = null;
+        }
+    };
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.prerender_test_main);
+        findViewById(R.id.preload_button).setOnClickListener(this);
+        findViewById(R.id.load_button).setOnClickListener(this);
+        ((EditText) findViewById(R.id.url_to_load)).setText(DEFAULT_URL);
+
+        mUrl = DEFAULT_URL;
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        Intent intent = new Intent();
+        intent.setClassName(getApplicationContext().getPackageName(),
+                ChromePrerenderService.class.getName());
+        bindService(intent, mConnection, Context.BIND_AUTO_CREATE);
+    }
+
+    @Override
+    protected void onDestroy() {
+        super.onDestroy();
+        if (mService != null) unbindService(mConnection);
+    }
+
+    /**
+     * Prerender a url using ChromePrerenderService.
+     * @param url The url to be prerendered.
+     */
+    public void prerenderUrl(String url) {
+        if (mService == null) return;
+        Message msg = Message.obtain(
+                null, ChromePrerenderService.MSG_PRERENDER_URL, 0, 0);
+        Bundle data = new Bundle();
+        data.putString(ChromePrerenderService.KEY_PRERENDERED_URL, url);
+        msg.setData(data);
+        try {
+            mService.send(msg);
+        } catch (RemoteException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    public void onClick(View view) {
+        mUrl = ((EditText) findViewById(R.id.url_to_load)).getText().toString();
+        if (view.getId() == R.id.preload_button) {
+            prerenderUrl(mUrl);
+        } else if (view.getId() == R.id.load_button) {
+            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(mUrl));
+            intent.setPackage(getApplicationContext().getPackageName());
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+            startActivity(intent);
+        }
+    }
+
+}