Import Android SDK Platform P [4697573]

/google/data/ro/projects/android/fetch_artifact \
    --bid 4697573 \
    --target sdk_phone_armv7-win_sdk \
    sdk-repo-linux-sources-4697573.zip

AndroidVersion.ApiLevel has been modified to appear as 28

Change-Id: If80578c3c657366cc9cf75f8db13d46e2dd4e077
diff --git a/com/android/test/runner/MultiDexTestRunner.java b/com/android/test/runner/MultiDexTestRunner.java
index d6931d1..02b81c8 100644
--- a/com/android/test/runner/MultiDexTestRunner.java
+++ b/com/android/test/runner/MultiDexTestRunner.java
@@ -17,7 +17,7 @@
 package com.android.test.runner;
 
 import android.os.Bundle;
-import android.support.multidex.MultiDex;
+import androidx.multidex.MultiDex;
 import android.test.InstrumentationTestRunner;
 
 /**