Exempt tests for hidden APIs.

Bug: 64382372
Bug: 74963051
Test: m
Change-Id: I5234dd6230f2bdd6ffccbf12b25a02d929d20161
diff --git a/tests/UsbTests/AndroidTest.xml b/tests/UsbTests/AndroidTest.xml
index 0b623fb..4affad3 100644
--- a/tests/UsbTests/AndroidTest.xml
+++ b/tests/UsbTests/AndroidTest.xml
@@ -25,5 +25,6 @@
     <test class="com.android.tradefed.testtype.AndroidJUnitTest">
         <option name="package" value="com.android.server.usb"/>
         <option name="runner" value="android.support.test.runner.AndroidJUnitRunner"/>
+        <option name="hidden-api-checks" value="false"/>
     </test>
-</configuration>
\ No newline at end of file
+</configuration>