Disable DroidGuard during unit tests

This aligns our test script with the functionality found in our TF
test configuration for preventing concurrency issues with DroidGuard.

Matching Widevine cl: go/wvgerrit/16791

Change-Id: Icc891de0a5f3795d8582b21e1bcf734049ddbf42

libwvdrmengine/run_all_unit_tests.sh

@@ -28,6 +28,13 @@ adb_shell_run() {
   fi
 }
 
+# Use Package Manager (via adb shell) to enable or disable DroidGuard.
+# Disabling DroidGuard during the test run prevents concurrency issues
+# with provisioning status.
+set_droidguard() {
+  adb shell pm $1 com.google.android.gms/com.google.android.gms.droidguard.DroidGuardService
+}
+
 if [ -z "$ANDROID_BUILD_TOP" ]; then
     echo "Android build environment not set"
     exit -1
@@ -44,6 +51,9 @@ if echo $ADB_OUTPUT | grep -qi "verity"; then
   exit -1
 fi
 
+# Disable DroidGuard to prevent provisioning collisions
+set_droidguard disable
+
 adb_shell_run GTEST_FILTER="$GTEST_FILTER:*Level1Required" FORCE_LEVEL3_OEMCRYPTO=yes \
   /system/bin/oemcrypto_test
 adb_shell_run /system/bin/oemcrypto_test
@@ -68,6 +78,9 @@ adb_shell_run /system/bin/entry_writer_test
 library_path="/system/vendor/lib/mediadrm/ "
 adb_shell_run LD_LIBRARY_PATH=$library_path /system/bin/libwvdrmengine_test
 
+# Re-enable DroidGuard
+set_droidguard enable
+
 adb_shell_run am start com.widevine.test/com.widevine.test.MediaDrmAPITest
 if [ $final_result -eq 0 ]; then
   echo "MediaDrm unittests completed successfully!"