Convert Telemetry test scripts to use vpython

Bug:805552
Change-Id: Ifd631d785f309d9f46b401daaec44d0cf89a8631

Pinpoint tryjobs:

Android: https://pinpoint-dot-chromeperf.appspot.com/job/14c63ffa440000
Linux: https://pinpoint-dot-chromeperf.appspot.com/job/10787612440000
Mac: https://pinpoint-dot-chromeperf.appspot.com/job/1499113a440000
Win: https://pinpoint-dot-chromeperf.appspot.com/job/1381251a440000
Change-Id: Ifd631d785f309d9f46b401daaec44d0cf89a8631
Reviewed-on: https://chromium-review.googlesource.com/956203
Commit-Queue: Ned Nguyen <nednguyen@google.com>
Reviewed-by: Robbie Iannucci <iannucci@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542053}

tools/perf/record_wpr

-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright 2012 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.

tools/perf/run_benchmark

-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright 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.

tools/perf/run_telemetry_tests

-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright 2016 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.

tools/perf/run_tests

-#!/usr/bin/env python
+#!/usr/bin/env vpython
 # Copyright 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.

tools/perf/scripts_smoke_unittest.py

@@ -16,11 +16,8 @@ class ScriptsSmokeTest(unittest.TestCase):
 
   perf_dir = os.path.dirname(__file__)
 
-  def RunPerfScript(self, command, venv=False):
+  def RunPerfScript(self, command):
     main_command = [sys.executable]
-    # TODO(crbug.com/805552): Remove if/else block
-    if venv:
-      main_command = ['vpython']
     args = main_command + command.split(' ')
     proc = subprocess.Popen(args, stdout=subprocess.PIPE,
                             stderr=subprocess.STDOUT, cwd=self.perf_dir)
@@ -50,8 +47,7 @@ class ScriptsSmokeTest(unittest.TestCase):
 
   @decorators.Disabled('chromeos')  # crbug.com/814068
   def testRunRecordWprList(self):
-    return_code, stdout = self.RunPerfScript('record_wpr --list-benchmarks',
-        venv=True)
+    return_code, stdout = self.RunPerfScript('record_wpr --list-benchmarks')
     # TODO(nednguyen): Remove this once we figure out why importing
     # small_profile_extender fails on Android dbg.
     # crbug.com/561668