Add a presubmit script and pylintrc for content/test/gpu

content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py

Index: content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py
diff --git a/content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py b/content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py
index 27352097e327f463f16cd035531041849a784904..43b6f30ee1030dfff1e76a14e97b84e4cb413f9a 100644
--- a/content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py
+++ b/content/test/gpu/gpu_tests/webgl_conformance_expectations_unittest.py
@@ -8,13 +8,13 @@ import unittest
 
 from telemetry.testing import fakes
 
-import fake_win_amd_gpu_info
-import gpu_test_base
-import path_util
-import test_expectations
-import webgl_conformance
-import webgl_conformance_expectations
-import webgl2_conformance_expectations
+from gpu_tests import fake_win_amd_gpu_info
+from gpu_tests import gpu_test_base
+from gpu_tests import path_util
+from gpu_tests import test_expectations
+from gpu_tests import webgl_conformance
+from gpu_tests import webgl_conformance_expectations
+from gpu_tests import webgl2_conformance_expectations
 
 class FakeWindowsPlatform(fakes.FakePlatform):
   @property
@@ -46,7 +46,7 @@ class FakePage(gpu_test_base.PageBase):
       expectations=expectations)
 
 Conditions = collections.\
-  namedtuple('Conditions', ['non_gpu', 'vendors', 'devices']);
+  namedtuple('Conditions', ['non_gpu', 'vendors', 'devices'])
 
 class WebGLConformanceExpectationsTest(unittest.TestCase):
   def testGlslConstructVecMatIndexExpectationOnWin(self):