Added test to check that GPU features are listed as hardware accelerated.

content/test/gpu/gpu_tests/hardware_accelerated_feature_expectations.py

+# Copyright (c) 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.
+
+from telemetry.page import test_expectations as expectations
+
+# Valid expectation conditions are:
+#
+# Operating systems:
+#     win, xp, vista, win7, mac, leopard, snowleopard, lion, mountainlion,
+#     linux, chromeos, android
+#
+# GPU vendors:
+#     amd, arm, broadcom, hisilicon, intel, imagination, nvidia, qualcomm,
+#     vivante
+#
+# Specific GPUs can be listed as a tuple with vendor name and device ID.
+# Examples: ('nvidia', 0x1234), ('arm', 'Mali-T604')
+# Device IDs must be paired with a GPU vendor.
+
+class HardwareAcceleratedFeatureExpectations(expectations.TestExpectations):
+  def SetExpectations(self):
+    # Accelerated 2D canvas is not available on Linux due to driver instability
+    self.Fail('HardwareAcceleratedFeature.canvas_accelerated',
+        ['linux'], bug=254724)