Remove search2 package and put everything into search

Change-Id: Ie8651c79ef023f154cd7120a88a20f3481abce2b
Fixes: 38502743
Test: make RunSettingsRoboTests

tests/robotests/src/com/android/settings/search/MockAppLoader.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.android.settings.search;
+
+import android.content.Context;
+import com.android.settings.search.InstalledAppResultLoader;
+import com.android.settings.search.SearchResult;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Mock loader to subvert the requirements of returning data while also driving the Loader
+ * lifecycle.
+ */
+class MockAppLoader extends InstalledAppResultLoader {
+
+    public MockAppLoader(Context context) {
+        super(context, null, "", null);
+    }
+
+    @Override
+    public List<? extends SearchResult> loadInBackground() {
+        return new ArrayList<>();
+    }
+
+    @Override
+    protected void onDiscardResult(List<? extends SearchResult> result) {
+
+    }
+}