[Android] Add an out-of-app instrumentation driver APK.

testing/android/java/src/org/chromium/test/outstrumentation/slave/OutstrumentationSlaveActivity.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.test.outstrumentation.slave;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+
+/**
+ * An Activity target for Outstrumentation that starts the specified Instrumentation test.
+ */
+public class OutstrumentationSlaveActivity extends Activity {
+
+    public static final String EXTRA_INSTRUMENTATION_PACKAGE =
+            "org.chromium.test.outstrumentation.slave.OutstrumentationSlaveActivity."
+                    + "InstrumentationPackage";
+    public static final String EXTRA_INSTRUMENTATION_CLASS =
+            "org.chromium.test.outstrumentation.slave.OutstrumentationSlaveActivity."
+                    + "InstrumentationClass";
+    public static final String EXTRA_TARGET_ARGS =
+            "org.chromium.test.outstrumentation.slave.OutstrumentationSlaveActivity.TargetArgs";
+    public static final String EXTRA_TEST =
+            "org.chromium.test.outstrumentation.slave.OutstrumentationSlaveActivity.Test";
+
+    private static final String TAG = "OutstrumentationSlaveActivity";
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        Log.d(TAG, "onCreate()");
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        Intent i = getIntent();
+        String instrumentationPackage = i.getStringExtra(EXTRA_INSTRUMENTATION_PACKAGE);
+        String instrumentationClass = i.getStringExtra(EXTRA_INSTRUMENTATION_CLASS);
+        Bundle targetArgs = i.getBundleExtra(EXTRA_TARGET_ARGS);
+        String test = i.getStringExtra(EXTRA_TEST);
+
+        if (instrumentationPackage == null || instrumentationClass == null) {
+            finish();
+            return;
+        }
+
+        ComponentName instrumentationComponent =
+                new ComponentName(instrumentationPackage, instrumentationClass);
+
+        if (test != null) {
+            targetArgs.putString("class", test);
+        }
+
+        startInstrumentation(instrumentationComponent, null, targetArgs);
+        finish();
+    }
+}
+