Empty per_page_values shouldn't imply test success

scripts/slave/recipes/chromium_trybot.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import collections
 
 from recipe_engine.types import freeze
 
 DEPS = [
   'amp',
@@ skipping 1348 matching lines @@
     api.platform.name('mac') +
     api.override_step_data('pixel_test on Intel GPU on Mac (with patch)',
                            api.raw_io.output_dir({'0/results.json': ''})) +
     api.override_step_data('analyze',
                            api.json.output({'status': 'Found dependency',
                                             'targets': gpu_targets,
                                             'build_targets': gpu_targets}))
   )
 
   yield (
+    api.test('telemetry_gpu_harness_failure') +
+    props(
+      mastername='tryserver.chromium.linux',
+      buildername='linux_chromium_rel_ng',
+    ) +
+    api.platform.name('linux') +
+    api.override_step_data(
+        'maps_pixel_test on NVIDIA GPU on Linux (with patch) on Linux',
+        api.test_utils.canned_telemetry_gpu_output(
+            passing=False, is_win=False, swarming=True,
+            empty_per_page_values=True),
+        retcode=255) +
+    api.override_step_data('analyze',
+                           api.json.output({'status': 'Found dependency',
+                                            'targets': gpu_targets,
+                                            'build_targets': gpu_targets}))
+  )
+
+  yield (
     api.test('telemetry_gpu_swarming_error') +
     props(
       mastername='tryserver.chromium.mac',
       buildername='mac_chromium_rel_ng',
     ) +
     api.platform.name('mac') +
     api.override_step_data(
         'pixel_test on Intel GPU on Mac (with patch)',
         api.raw_io.output_dir({
           '0/results.json': '',
@@ skipping 206 matching lines @@
                            api.test_utils.canned_test_output(passing=True))
   )
 
   yield (
     api.test('use_v8_patch_on_blink_trybot') +
     props(mastername='tryserver.blink',
           buildername='mac_blink_rel',
           patch_project='v8') +
     api.platform.name('mac')
   )