Settings: Re-add whisperpush settings.

Change-Id: I8bdfed313a113ec2cc5d55e9357dee7932604aff

res/values/cm_strings.xml

@@ -953,4 +953,11 @@
     <string name="lockscreen_default_target">Default</string>
     <string name="lockscreen_message">Tap an icon on the left or right to reassign a lock screen shortcut.</string>
     <string name="lockscreen_choose_action_title">Choose action</string>
+
+    <!-- WhisperPush -->
+    <string name="whisperpush_title">WhisperPush</string>
+    <string name="whisperpush_summary">Manage secure SMS settings</string>
+    <string name="whisperpush_registration_title">Register</string>
+    <string name="whisperpush_registration_summary">Register for WhisperPush to enable encrypted SMS.</string>
+    <string name="whisperpush_identitykey_title">Review identity keys</string>
 </resources>

res/xml/privacy_settings_whisperpush.xml

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 The CyanogenMod 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.
+-->
+
+<PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <Preference
+            android:key="whisperpush"
+            android:title="@string/whisperpush_title"
+            android:summary="@string/whisperpush_summary">
+        <intent android:targetPackage="org.whispersystems.whisperpush"
+                android:targetClass="org.whispersystems.whisperpush.ui.PreferenceActivity" />
+    </Preference>
+
+</PreferenceScreen>

src/com/android/settings/cyanogenmod/PrivacySettings.java

@@ -44,12 +44,19 @@ public void onCreate(Bundle savedInstanceState) {
         // Add package manager to check if features are available
         PackageManager pm = getPackageManager();
 
+        // WhisperPush
+        // Only add if device has telephony support and has WhisperPush installed.
+        if (Utils.isPackageInstalled(getActivity(), "org.whispersystems.whisperpush")) {
+            addPreferencesFromResource(R.xml.privacy_settings_whisperpush);
+        }
+
         // Determine options based on device telephony support
         if (!pm.hasSystemFeature(PackageManager.FEATURE_TELEPHONY)) {
             // No telephony, remove dependent options
             PreferenceScreen root = getPreferenceScreen();
             root.removePreference(mBlacklist);
         }
+
     }
 
     @Override