Don't attempt to use RawContacts.getLocalAccount APIs below R

Test: atest ContactsTests

Change-Id: Ic41d28bb1fa0a3bcd1fceda8b33baba2fdeeb2bc
diff --git a/src/com/android/contacts/model/account/AccountWithDataSet.java b/src/com/android/contacts/model/account/AccountWithDataSet.java
index 9671762..358ef9c 100644
--- a/src/com/android/contacts/model/account/AccountWithDataSet.java
+++ b/src/com/android/contacts/model/account/AccountWithDataSet.java
@@ -21,6 +21,7 @@
 import android.content.Context;
 import android.database.Cursor;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Parcel;
 import android.os.Parcelable;
 import android.provider.BaseColumns;
@@ -87,11 +88,12 @@
     }
 
     public static AccountWithDataSet getLocalAccount(Context context) {
-        return new AccountWithDataSet(
-                RawContacts.getLocalAccountName(context),
-                RawContacts.getLocalAccountType(context),
-                null
-        );
+        return android.os.Build.VERSION.SDK_INT < Build.VERSION_CODES.R
+                ? getNullAccount()
+                : new AccountWithDataSet(
+                      RawContacts.getLocalAccountName(context),
+                      RawContacts.getLocalAccountType(context),
+                      null);
     }
 
     public Account getAccountOrNull() {
@@ -261,4 +263,3 @@
         return ret;
     }
 }
-