Roll trace-viewer deps to the latest.

tools/telemetry/telemetry/value/trace.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.
 
 import datetime
 import logging
 import os
 import random
 import shutil
+import StringIO
 import sys
 import tempfile
 
 from telemetry.timeline import trace_data as trace_data_module
 from telemetry.core import util
 from telemetry.util import cloud_storage
 from telemetry.util import file_handle
 from telemetry import value as value_module
 
 # Bring in tv module for transforming raw trace to html form.
@@ skipping 12 matching lines @@
     an index, files.html, linking to each of these files.
     """
     super(TraceValue, self).__init__(
         page, name='trace', units='', important=important,
         description=description, tir_label=None)
     self._temp_file = self._GetTempFileHandle(trace_data)
     self._cloud_url = None
     self._serialized_file_handle = None
 
   def _GetTempFileHandle(self, trace_data):
-    tf = tempfile.NamedTemporaryFile(delete=False, suffix='.html')
     if self.page:
       title = self.page.display_name
     else:
       title = ''
+    content = StringIO.StringIO()
     trace2html.WriteHTMLForTraceDataToFile(
         [trace_data.GetEventsFor(trace_data_module.CHROME_TRACE_PART)],
         title,
-        tf)
+        content)
+    tf = tempfile.NamedTemporaryFile(delete=False, suffix='.html')
+    tf.write(content.getvalue().encode('utf-8'))
     tf.close()
     return file_handle.FromTempFile(tf)
 
   def __repr__(self):
     if self.page:
       page_name = self.page.url
     else:
       page_name = None
     return 'TraceValue(%s, %s)' % (page_name, self.name)
 
@@ skipping 81 matching lines @@
           fh.extension))
       self._cloud_url = cloud_storage.Insert(
           bucket, remote_path, fh.GetAbsPath())
       sys.stderr.write(
           'View generated trace files online at %s for page %s\n' %
           (self._cloud_url, self.page.url if self.page else 'unknown'))
       return self._cloud_url
     except cloud_storage.PermissionError as e:
       logging.error('Cannot upload trace files to cloud storage due to '
                     ' permission error: %s' % e.message)