Fix 'test_runner.py linker' logcat output

build/android/pylib/device/adb_wrapper.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.
 
 """This module wraps Android's adb tool.
 
 This is a thin wrapper around the adb interface. Any additional complexity
 should be delegated to a higher level (ex. DeviceUtils).
 """
 
@@ skipping 317 matching lines @@
       use_iter = False
     if logcat_format:
       cmd.extend(['-v', logcat_format])
     if filter_specs:
       cmd.extend(filter_specs)
 
     if use_iter:
       return self._IterRunDeviceAdbCmd(cmd, timeout)
     else:
       timeout = timeout if timeout is not None else _DEFAULT_TIMEOUT
-      return self._RunDeviceAdbCmd(cmd, timeout, retries)
+      return self._RunDeviceAdbCmd(cmd, timeout, retries).splitlines()
 
   def Forward(self, local, remote, timeout=_DEFAULT_TIMEOUT,
               retries=_DEFAULT_RETRIES):
     """Forward socket connections from the local socket to the remote socket.
 
     Sockets are specified by one of:
       tcp:<port>
       localabstract:<unix domain socket name>
       localreserved:<unix domain socket name>
       localfilesystem:<unix domain socket name>
@@ skipping 167 matching lines @@
     """Restarts the adbd daemon with root permissions, if possible.
 
     Args:
       timeout: (optional) Timeout per try in seconds.
       retries: (optional) Number of retries to attempt.
     """
     output = self._RunDeviceAdbCmd(['root'], timeout, retries)
     if 'cannot' in output:
       raise device_errors.AdbCommandFailedError(
           ['root'], output, device_serial=self._device_serial)