Add QuickstepProcessInitializer back to common src

While removing unused files in Go version of quickstep, I removed
QuickstepProcessInitializer which seemed unused but is actually
initialized as a resource based ovverride. This CL puts it back as
common src so that both Launcher3GoIconRecents and the rest of the
variants all use this class.

Bug: 135472635
Test: Run Launcher3GoIconRecents => no exception
Test: Run Launcher3 => no exception
Change-Id: I56f319bac536ec4da96285fab932fe574afa4520

quickstep/src/com/android/quickstep/QuickstepProcessInitializer.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2018 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.quickstep;
+
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.os.UserManager;
+import android.util.Log;
+
+import com.android.launcher3.BuildConfig;
+import com.android.launcher3.MainProcessInitializer;
+import com.android.systemui.shared.system.ThreadedRendererCompat;
+
+@SuppressWarnings("unused")
+public class QuickstepProcessInitializer extends MainProcessInitializer {
+
+    private static final String TAG = "QuickstepProcessInitializer";
+
+    public QuickstepProcessInitializer(Context context) { }
+
+    @Override
+    protected void init(Context context) {
+        // Workaround for b/120550382, an external app can cause the launcher process to start for
+        // a work profile user which we do not support. Disable the application immediately when we
+        // detect this to be the case.
+        UserManager um = (UserManager) context.getSystemService(Context.USER_SERVICE);
+        if (um.isManagedProfile()) {
+            PackageManager pm = context.getPackageManager();
+            pm.setApplicationEnabledSetting(context.getPackageName(),
+                    PackageManager.COMPONENT_ENABLED_STATE_DISABLED, 0 /* flags */);
+            Log.w(TAG, "Disabling " + BuildConfig.APPLICATION_ID
+                    + ", unable to run in a managed profile");
+            return;
+        }
+
+        super.init(context);
+
+        // Elevate GPU priority for Quickstep and Remote animations.
+        ThreadedRendererCompat.setContextPriority(ThreadedRendererCompat.EGL_CONTEXT_PRIORITY_HIGH_IMG);
+    }
+}