Update reference to page_test module to use legacy_page_test module

content/test/gpu/gpu_tests/hardware_accelerated_feature.py

Index: content/test/gpu/gpu_tests/hardware_accelerated_feature.py
diff --git a/content/test/gpu/gpu_tests/hardware_accelerated_feature.py b/content/test/gpu/gpu_tests/hardware_accelerated_feature.py
index 69d87c2b82365b092b4d7b5a955210adcdd76133..0aa95235950cd5806ee10b66b115a04d4605579c 100644
--- a/content/test/gpu/gpu_tests/hardware_accelerated_feature.py
+++ b/content/test/gpu/gpu_tests/hardware_accelerated_feature.py
@@ -4,7 +4,7 @@
 from gpu_tests import gpu_test_base
 import gpu_tests.hardware_accelerated_feature_expectations as hw_expectations
 
-from telemetry.page import page_test
+from telemetry.page import legacy_page_test
 from telemetry.story import story_set as story_set_module
 
 test_harness_script = r"""
@@ -30,7 +30,7 @@ class HardwareAcceleratedFeatureValidator(gpu_test_base.ValidatorBase):
     if not tab.EvaluateJavaScript('VerifyHardwareAccelerated("%s")' % feature):
       print 'Test failed. Printing page contents:'
       print tab.EvaluateJavaScript('document.body.innerHTML')
-      raise page_test.Failure('%s not hardware accelerated' % feature)
+      raise legacy_page_test.Failure('%s not hardware accelerated' % feature)
 
 def safe_feature_name(feature):
   return feature.lower().replace(' ', '_')