[Telemetry] Cut down on the amount of log spam on the android perf bots.

build/android/pylib/surface_stats_collector.py

 # Copyright (c) 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.
 
 import Queue
 import datetime
 import logging
 import re
 import threading
 
@@ skipping 226 matching lines @@
     # ceil((C - A) / refresh-period)
     #
     # (each time the number above changes, we have a "jank").
     # If this happens a lot during an animation, the animation appears
     # janky, even if it runs at 60 fps in average.
     #
     # We use the special "SurfaceView" window name because the statistics for
     # the activity's main window are not updated when the main web content is
     # composited into a SurfaceView.
     results = self._adb.RunShellCommand(
-        'dumpsys SurfaceFlinger --latency SurfaceView', log_result=True)
+        'dumpsys SurfaceFlinger --latency SurfaceView',
+        log_result=logging.getLogger().isEnabledFor(logging.DEBUG))
     if not len(results):
       return (None, None)
 
     timestamps = []
     nanoseconds_per_second = 1e9
     refresh_period = long(results[0]) / nanoseconds_per_second
 
     # If a fence associated with a frame is still pending when we query the
     # latency data, SurfaceFlinger gives the frame a timestamp of INT64_MAX.
     # Since we only care about completed frames, we will ignore any timestamps
@@ skipping 30 matching lines @@
       try:
         cur_surface = int(match.group(1), 16)
       except Exception:
         logging.error('Failed to parse current surface from ' + match.group(1))
     else:
       logging.warning('Failed to call SurfaceFlinger surface ' + results[0])
     return {
         'page_flip_count': cur_surface,
         'timestamp': datetime.datetime.now(),
     }