Unify the default template and title

On AppDataUsage page, using single source of truth to calculate the
default template, and set title base on the current template.

Fix: 213266028
Fix: 234104784
Test: visual - on AppDataUsage
Test: unit test
Change-Id: I80facca0b000964e901905af51a344a4bc9f498b

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

@@ -17,7 +17,6 @@ package com.android.settings.datausage;
 import static android.content.pm.PackageManager.FEATURE_ETHERNET;
 import static android.content.pm.PackageManager.FEATURE_USB_HOST;
 import static android.content.pm.PackageManager.FEATURE_WIFI;
-import static android.telephony.TelephonyManager.SIM_STATE_READY;
 
 import android.app.usage.NetworkStats.Bucket;
 import android.app.usage.NetworkStatsManager;
@@ -49,7 +48,6 @@ import java.util.Optional;
 public final class DataUsageUtils {
     static final boolean TEST_RADIOS = false;
     static final String TEST_RADIOS_PROP = "test.radios";
-    private static final boolean LOGD = false;
     private static final String ETHERNET = "ethernet";
     private static final String TAG = "DataUsageUtils";
 
@@ -106,44 +104,6 @@ public final class DataUsageUtils {
         return tele.isDataCapable();
     }
 
-    /**
-     * Test if device has a mobile data radio with SIM in ready state.
-     */
-    public static boolean hasReadyMobileRadio(Context context) {
-        if (DataUsageUtils.TEST_RADIOS) {
-            return SystemProperties.get(DataUsageUtils.TEST_RADIOS_PROP).contains("mobile");
-        }
-        final List<SubscriptionInfo> subInfoList =
-                ProxySubscriptionManager.getInstance(context)
-                .getActiveSubscriptionsInfo();
-        // No activated Subscriptions
-        if (subInfoList == null) {
-            if (LOGD) {
-                Log.d(TAG, "hasReadyMobileRadio: subInfoList=null");
-            }
-            return false;
-        }
-        final TelephonyManager tele = context.getSystemService(TelephonyManager.class);
-        // require both supported network and ready SIM
-        boolean isReady = true;
-        for (SubscriptionInfo subInfo : subInfoList) {
-            isReady = isReady & tele.getSimState(subInfo.getSimSlotIndex()) == SIM_STATE_READY;
-            if (LOGD) {
-                Log.d(TAG, "hasReadyMobileRadio: subInfo=" + subInfo);
-            }
-        }
-
-        final boolean isDataCapable = tele.isDataCapable();
-        final boolean retVal = isDataCapable && isReady;
-        if (LOGD) {
-            Log.d(TAG, "hasReadyMobileRadio:"
-                    + " telephonManager.isDataCapable()="
-                    + isDataCapable
-                    + " isReady=" + isReady);
-        }
-        return retVal;
-    }
-
     /**
      * Whether device has a Wi-Fi data radio.
      */