Revert of [Android] Refactor the native test wrappers.

testing/android/native_test/java/src/org/chromium/native_test/NativeUnitTestActivity.java

Index: testing/android/native_test/java/src/org/chromium/native_test/NativeUnitTestActivity.java
diff --git a/testing/android/native_test/java/src/org/chromium/native_test/NativeUnitTestActivity.java b/testing/android/native_test/java/src/org/chromium/native_test/NativeUnitTestActivity.java
deleted file mode 100644
index ae6672755b038e9073ec9f70f8dcd47a571307bc..0000000000000000000000000000000000000000
--- a/testing/android/native_test/java/src/org/chromium/native_test/NativeUnitTestActivity.java
+++ /dev/null
@@ -1,48 +0,0 @@
-// 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.native_test;
-
-import android.os.Bundle;
-
-import org.chromium.base.Log;
-import org.chromium.base.PathUtils;
-import org.chromium.base.PowerMonitor;
-import org.chromium.base.ResourceExtractor;
-import org.chromium.base.library_loader.NativeLibraries;
-
-/**
- * An {@link android.app.Activity} for running native unit tests.
- * (i.e., not browser tests)
- */
-public class NativeUnitTestActivity extends NativeTestActivity {
-
-    private static final String TAG = Log.makeTag("native_test");
-
-    @Override
-    public void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-
-        // Needed by path_utils_unittest.cc
-        PathUtils.setPrivateDataDirectorySuffix("chrome", getApplicationContext());
-
-        ResourceExtractor resourceExtractor = ResourceExtractor.get(getApplicationContext());
-        resourceExtractor.setExtractAllPaksAndV8SnapshotForTesting();
-        resourceExtractor.startExtractingResources();
-        resourceExtractor.waitForCompletion();
-
-        // Needed by system_monitor_unittest.cc
-        PowerMonitor.createForTests(this);
-
-        loadLibraries();
-    }
-
-    private void loadLibraries() {
-        for (String library : NativeLibraries.LIBRARIES) {
-            Log.i(TAG, "loading: %s", library);
-            System.loadLibrary(library);
-            Log.i(TAG, "loaded: %s", library);
-        }
-    }
-}