Revert of [Android] Remove adb_commands from telemetry.

tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py

Index: tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py
diff --git a/tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py b/tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py
index 16962c82f53988658494b46d7ea3d42b5d3a9d85..6ad22c4e664257c1c06746506e4eb3be2b9e1b40 100644
--- a/tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py
+++ b/tools/telemetry/telemetry/core/platform/profiler/tcpdump_profiler.py
@@ -2,20 +2,14 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-import logging
 import os
 import signal
 import subprocess
 import sys
 import tempfile
 
-from telemetry.core import util
 from telemetry.core.platform import profiler
 from telemetry.core.platform.profiler import android_prebuilt_profiler_helper
-
-util.AddDirToPythonPath(util.GetChromiumSrcDir(), 'build', 'android')
-from pylib import device_signal # pylint: disable=import-error
-from pylib.device import device_errors # pylint: disable=import-error
 
 _TCP_DUMP_BASE_OPTS = ['-i', 'any', '-p', '-s', '0', '-w']
 
@@ -29,30 +23,28 @@
 
   _DEVICE_DUMP_FILE = '/sdcard/tcpdump_profiles/capture.pcap'
 
-  def __init__(self, device, output_path):
-    self._device = device
+  def __init__(self, adb, output_path):
+    self._adb = adb
     self._output_path = output_path
-    self._device.RunShellCommand('mkdir -p ' +
-                                 os.path.dirname(self._DEVICE_DUMP_FILE))
+    self._adb.RunShellCommand('mkdir -p ' +
+                              os.path.dirname(self._DEVICE_DUMP_FILE))
     self._proc = subprocess.Popen(
-        ['adb', '-s', self._device.adb.GetDeviceSerial(),
+        ['adb', '-s', self._adb.device_serial(),
          'shell', android_prebuilt_profiler_helper.GetDevicePath('tcpdump')] +
          _TCP_DUMP_BASE_OPTS +
          [self._DEVICE_DUMP_FILE])
 
   def CollectProfile(self):
-    try:
-      self._device.KillAll('tcpdump', signum=device_signal.SIGTERM)
-    except device_errors.CommandFailedError:
-      logging.exception('Unable to kill TCPDump.')
+    tcpdump_pid = self._adb.ExtractPid('tcpdump')
+    if not tcpdump_pid or not tcpdump_pid[0]:
       raise Exception('Unable to find TCPDump. Check your device is rooted '
           'and tcpdump is installed at ' +
           android_prebuilt_profiler_helper.GetDevicePath('tcpdump'))
-
+    self._adb.RunShellCommand('kill -term ' + tcpdump_pid[0])
     self._proc.terminate()
     host_dump = os.path.join(self._output_path,
                              os.path.basename(self._DEVICE_DUMP_FILE))
-    self._device.PullFile(self._DEVICE_DUMP_FILE, host_dump)
+    self._adb.device().PullFile(self._DEVICE_DUMP_FILE, host_dump)
     print 'TCP dump available at: %s ' % host_dump
     print 'Use Wireshark to open it.'
     return host_dump
@@ -106,9 +98,9 @@
         browser_backend, platform_backend, output_path, state)
     if platform_backend.GetOSName() == 'android':
       android_prebuilt_profiler_helper.InstallOnDevice(
-          browser_backend.device, 'tcpdump')
+          browser_backend.adb.device(), 'tcpdump')
       self._platform_profiler = _TCPDumpProfilerAndroid(
-          browser_backend.device, output_path)
+          browser_backend.adb, output_path)
     else:
       self._platform_profiler = _TCPDumpProfilerLinux(output_path)