Refactor cros VM test runner with more test abstraction.

Now with more OOP! Class structure is:

RemoteTest
   | --- GTestTest
   | --- BrowserSanityTest

Doesn't add anything new. Just splits out sanity-test and gtest-test
logic into their own classes (and resuses what it can in a parent class)

I'm planning on making some changes to how GTests are launched in the
VM. This'll make that easier.

I'm also thinking about reusing some logic in here when running hardware
tests. This will make that easier as well.

Bug: 732531, 866062
Change-Id: I80a6e29c657b1db6c7911cb873c64be094c9b5ef
Reviewed-on: https://chromium-review.googlesource.com/1145796Reviewed-by: John Budorick <jbudorick@chromium.org>
Commit-Queue: Ben Pastene <bpastene@chromium.org>
Cr-Commit-Position: refs/heads/master@{#577996}

build/chromeos/PRESUBMIT.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.
+
+"""Presubmit script for build/chromeos/.
+
+See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
+details on the presubmit API built into depot_tools.
+"""
+
+
+def CommonChecks(input_api, output_api):
+  return input_api.canned_checks.RunPylint(
+      input_api,
+      output_api,
+      pylintrc='pylintrc')
+
+
+def CheckChangeOnUpload(input_api, output_api):
+  return CommonChecks(input_api, output_api)
+
+
+def CheckChangeOnCommit(input_api, output_api):
+  return CommonChecks(input_api, output_api)

build/chromeos/create_vm_test_script.py

@@ -10,7 +10,6 @@ build/chromeos/run_vm_test.py.
 
 import argparse
 import os
-import re
 import sys
 
 

build/chromeos/pylintrc

+[FORMAT]
+
+max-line-length=80
+
+[MESSAGES CONTROL]
+
+disable=abstract-class-not-used,bad-continuation,bad-indentation,duplicate-code,fixme,invalid-name,locally-disabled,locally-enabled,missing-docstring,star-args,too-few-public-methods,too-many-arguments,too-many-branches,too-many-instance-attributes,too-many-lines,too-many-locals,too-many-public-methods,too-many-statements,wrong-import-position
+
+[REPORTS]
+
+reports=no
+
+[VARIABLES]
+
+dummy-variables-rgx=^_.*$|dummy