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

testing/android/java/src/org/chromium/test/passenger/OnDeviceInstrumentationPassenger.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.passenger;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.os.Bundle;
+import android.util.Log;
+
+/**
+ * An Activity target for OnDeviceInstrumentationPassenger that starts the specified

[Yaron, 2015/04/07 15:39:04]

Perhaps *Broker? Passenger doesn't mean anything to me off the bat maybe I'm
just unfamiliar with the idiom/pattern

[jbudorick, 2015/04/07 19:24:45]

I'm no good with names and am open to suggestions. Passenger made sense to be
because it's being driven by the Driver, but I'm certainly not sold on the name.
I'm not sure Broker is any more (or less) clear.

[Yaron, 2015/04/07 20:12:29]

Broker seemed like a decent-ish analog based on:
http://en.wikipedia.org/wiki/Broker_Pattern :)

+ * Instrumentation test.
+ */
+public class OnDeviceInstrumentationPassenger extends Activity {
+
+    public static final String EXTRA_INSTRUMENTATION_PACKAGE =
+            "org.chromium.test.passenger.OnDeviceInstrumentationPassenger."
+                    + "InstrumentationPackage";
+    public static final String EXTRA_INSTRUMENTATION_CLASS =
+            "org.chromium.test.passenger.OnDeviceInstrumentationPassenger."
+                    + "InstrumentationClass";
+    public static final String EXTRA_TARGET_ARGS =
+            "org.chromium.test.passenger.OnDeviceInstrumentationPassenger.TargetArgs";
+    public static final String EXTRA_TEST =
+            "org.chromium.test.passenger.OnDeviceInstrumentationPassenger.Test";
+
+    private static final String TAG = "OnDeviceInstrumentationPassenger";
+
+    @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();
+    }
+}
+