Change IMPORTANCE_PERCEPTIBLE_DEPRECATED to IMPORTANCE_PERCEPTIBLE_PRE_26

Also make sure to return the legacy value from
RunningAppProcessInfo.importance.

Bug: 37636026

Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsAppTestCases -t 'android.app.cts.ActivityManagerTest#testGetRunningAppProcesses'
Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsAppTestCases -t 'android.app.cts.ActivityManagerTest#testGetMyMemoryState'
Test: cts-tradefed run cts-dev --skip-device-info --skip-preconditions --skip-system-status-check com.android.compatibility.common.tradefed.targetprep.NetworkConnectivityChecker -a armeabi-v7a -l INFO -m CtsAppTestCases -t 'android.app.cts.AlertWindowsTests'
Change-Id: Ie04e4dfa40c28ea391ae5ce3c769c6f8ee70a43d
diff --git a/core/java/android/content/pm/PackageManagerInternal.java b/core/java/android/content/pm/PackageManagerInternal.java
index 7bfde75..7f9fe357 100644
--- a/core/java/android/content/pm/PackageManagerInternal.java
+++ b/core/java/android/content/pm/PackageManagerInternal.java
@@ -333,4 +333,9 @@
      * @param isolatedUid isolated uid that is no longer being used.
      */
     public abstract void removeIsolatedUid(int isolatedUid);
+
+    /**
+     * Return the taget SDK version for the app with the given UID.
+     */
+    public abstract int getUidTargetSdkVersion(int uid);
 }