[Telemetry] Add script to snapshot page's HTML

PRESUBMIT.py

 # Copyright 2015 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.
 
 """Top-level presubmit script for catapult.
 
 See https://www.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into depot_tools.
 """
 import re
@@ skipping 13 matching lines @@
     r'^CONTRIBUTORS\.md$',
     r'.*LICENSE$',
     r'.*OWNERS$',
     r'.*README\.md$',
     r'^dashboard[\\/]dashboard[\\/]api[\\/]examples[\\/].*.js',
     r'^dashboard[\\/]dashboard[\\/]templates[\\/].*',
     r'^experimental[\\/]heatmap[\\/].*',
     r'^experimental[\\/]trace_on_tap[\\/]third_party[\\/].*',
     r'^perf_insights[\\/]test_data[\\/].*',
     r'^perf_insights[\\/]third_party[\\/].*',
+    r'^telemetry[\\/]third_party[\\/].*',
     r'^third_party[\\/].*',
     r'^tracing[\\/]\.allow-devtools-save$',
     r'^tracing[\\/]bower\.json$',
     r'^tracing[\\/]\.bowerrc$',
     r'^tracing[\\/]tracing_examples[\\/]string_convert\.js$',
     r'^tracing[\\/]test_data[\\/].*',
     r'^tracing[\\/]third_party[\\/].*',
     r'^telemetry[\\/]support[\\/]html_output[\\/]results-template.html',
 )
 
@@ skipping 72 matching lines @@
     sys.path.remove(input_api.PresubmitLocalPath())
   return results
 
 
 def CheckChangeOnUpload(input_api, output_api):
   return CheckChange(input_api, output_api)
 
 
 def CheckChangeOnCommit(input_api, output_api):
   return CheckChange(input_api, output_api)