A separate entry for work profile CA cert

We mixed both primary and work profile CA certs into single entry
previously which is not aligned with the CTS requirement.
Separate them from now.

Test: m -j RoboSettingsTest
Test: Run related manual test in CtsVerifier

Bug: 64567417

Change-Id: Iaff2d9f25ef15b96c11727e7075bdae8e90ec8ce

src/com/android/settings/enterprise/CaCertsPreferenceControllerBase.java

@@ -0,0 +1,51 @@
+/*
+ * 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.enterprise;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.DynamicAvailabilityPreferenceController;
+import com.android.settings.overlay.FeatureFactory;
+import com.android.settingslib.core.lifecycle.Lifecycle;
+
+public abstract class CaCertsPreferenceControllerBase
+        extends DynamicAvailabilityPreferenceController {
+
+    protected final EnterprisePrivacyFeatureProvider mFeatureProvider;
+
+    public CaCertsPreferenceControllerBase(Context context, Lifecycle lifecycle) {
+        super(context, lifecycle);
+        mFeatureProvider = FeatureFactory.getFactory(context)
+                .getEnterprisePrivacyFeatureProvider(context);
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        final int certs = getNumberOfCaCerts();
+        preference.setSummary(mContext.getResources().getQuantityString(
+                R.plurals.enterprise_privacy_number_ca_certs, certs, certs));
+    }
+
+    @Override
+    public boolean isAvailable() {
+        final boolean available = getNumberOfCaCerts() > 0;
+        notifyOnAvailabilityUpdate(available);
+        return available;
+    }
+
+    protected abstract int getNumberOfCaCerts();
+}