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

content/test/gpu/page_sets/gpu_process_tests.py

 # Copyright 2014 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.story import story_set as story_set_module
+from telemetry.page import page_test
 
 from gpu_tests import gpu_test_base
 
 class GpuProcessTestsPage(gpu_test_base.PageBase):
 
   def __init__(self, url, name, story_set, expectations):
     super(GpuProcessTestsPage, self).__init__(url=url, page_set=story_set,
                                               name=name,
                                               expectations=expectations)
 
@@ skipping 52 matching lines @@
        'GpuProcess.css3d'),
       ('file://../../data/gpu/functional_webgl.html',
        'GpuProcess.webgl')
     ]
 
     for url, name in urls_and_names_list:
       self.AddStory(GpuProcessTestsPage(url, name, self, expectations))
 
     self.AddStory(FunctionalVideoPage(self, expectations))
     self.AddStory(GpuInfoCompletePage(self, expectations))