[telemetry] Make browser finding on android tolerate device faults.

telemetry/telemetry/internal/backends/chrome/android_browser_finder.py

 # 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.
 
 """Finds android browsers that can be controlled by telemetry."""
 
 import logging
 import os
 import sys
 
 from py_utils import dependency_util
+from devil import base_error
 from devil.android import apk_helper
 
 from telemetry.core import exceptions
 from telemetry.core import platform
 from telemetry.core import util
 from telemetry import decorators
 from telemetry.internal.backends import android_browser_backend_settings
 from telemetry.internal.backends.chrome import android_browser_backend
 from telemetry.internal.browser import browser
 from telemetry.internal.browser import possible_browser
@@ skipping 226 matching lines @@
 
 
 def FindAllAvailableBrowsers(finder_options, device):
   """Finds all the possible browsers on one device.
 
   The device is either the only device on the host platform,
   or |finder_options| specifies a particular device.
   """
   if not isinstance(device, android_device.AndroidDevice):
     return []
-  android_platform = platform.GetPlatformForDevice(device, finder_options)
-  return _FindAllPossibleBrowsers(finder_options, android_platform)
+
+  try:
+    android_platform = platform.GetPlatformForDevice(device, finder_options)
+    return _FindAllPossibleBrowsers(finder_options, android_platform)
+  except base_error.BaseError as e:
+    logging.error('Unable to find browsers on %s: %s', device.device_id, str(e))
+  return []