Add separate test APK for OpenXR runtime

Bug: 381000093
Change-Id: Ibc25858c76a39213522f06785f4078611801fa14
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6253234
Reviewed-by: Andrew Grieve <[email protected]>
Commit-Queue: Andrew Grieve <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1419284}
NOKEYCHECK=True
GitOrigin-RevId: ceb29adc92eb3c58d14b57c52a7e9d610529b711

Author: alcooper91

android/pylib/local/device/local_device_gtest_run.py

@@ -550,7 +550,7 @@ def bind_crash_handler(step, dev):
 
         def deploy_openxr_runtime(dev):
           apk_path = dev.GetApplicationPaths(
-              self._test_instance.apk_helper.GetPackageName())
+              'org.chromium.device.vr.openxr_test_support')
           apk_dir = os.path.dirname(apk_path[0])
 
           abi = device.product_cpu_abi