Fix App data usage screen header title changing after device orientation

- Chageed the title "App data usage" to "Mobile data & Wi-Fi"

Change-Id: I0fa00180eedda6be6189f871f9984ac164f9fb67
Fixes: 118770561
Test: visual & robotests

src/com/android/settings/datausage/AppDataUsageActivity.java

@@ -62,7 +62,7 @@ public class AppDataUsageActivity extends SettingsActivity {
         args.putParcelable(AppDataUsage.ARG_APP_ITEM, appItem);
         intent.putExtra(EXTRA_SHOW_FRAGMENT_ARGUMENTS, args);
         intent.putExtra(EXTRA_SHOW_FRAGMENT, AppDataUsage.class.getName());
-        intent.putExtra(EXTRA_SHOW_FRAGMENT_TITLE_RESID, R.string.app_data_usage);
+        intent.putExtra(EXTRA_SHOW_FRAGMENT_TITLE_RESID, R.string.data_usage_app_summary_title);
 
         super.onCreate(savedInstanceState);
     }

src/com/android/settings/datausage/DataUsageList.java

@@ -419,7 +419,7 @@ public class DataUsageList extends DataUsageBaseFragment {
 
         new SubSettingLauncher(getContext())
                 .setDestination(AppDataUsage.class.getName())
-                .setTitleRes(R.string.app_data_usage)
+                .setTitleRes(R.string.data_usage_app_summary_title)
                 .setArguments(args)
                 .setSourceMetricsCategory(getMetricsCategory())
                 .launch();

src/com/android/settings/datausage/UnrestrictedDataAccessPreference.java

@@ -82,7 +82,7 @@ public class UnrestrictedDataAccessPreference extends AppSwitchPreference implem
         if (mDataUsageState.isDataSaverBlacklisted) {
             // app is blacklisted, launch App Data Usage screen
             AppInfoDashboardFragment.startAppInfoFragment(AppDataUsage.class,
-                    R.string.app_data_usage,
+                    R.string.data_usage_app_summary_title,
                     null /* arguments */,
                     mParentFragment,
                     mEntry);