Disallowing decor on the home workspace/stack

package com.android.internal.policy;

import static android.app.ActivityManager.FULLSCREEN_WORKSPACE_STACK_ID;

import static android.app.ActivityManager.FIRST_DYNAMIC_STACK_ID;

import static android.app.ActivityManager.FREEFORM_WORKSPACE_STACK_ID;

import static android.app.ActivityManager.FULLSCREEN_WORKSPACE_STACK_ID;

import static android.app.ActivityManager.HOME_STACK_ID;

import static android.view.View.MeasureSpec.AT_MOST;

import static android.view.View.MeasureSpec.EXACTLY;

import static android.view.View.MeasureSpec.getMode;

        boolean isApplication = attrs.type == TYPE_BASE_APPLICATION ||

                attrs.type == TYPE_APPLICATION;

        mWorkspaceId = getWorkspaceId();

        // Only a non floating application window can get a non client decor.

        if (!isFloating() && isApplication) {

        // Only a non floating application window on one of the allowed worksapces can get a non

        // client decor.

        if (!isFloating() && isApplication && mWorkspaceId != HOME_STACK_ID &&

                mWorkspaceId < FIRST_DYNAMIC_STACK_ID) {

            // Dependent on the brightness of the used title we either use the

            // dark or the light button frame.

            TypedValue value = new TypedValue();