Revert of [Android] Remove adb_commands from telemetry.

tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py

Index: tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py
diff --git a/tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py b/tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py
index ef065be3c4f10a2041f31802e2d12efa44a8d3f0..73e126ea5cb4929dc257da60c9b8e0f71b88f124 100644
--- a/tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py
+++ b/tools/telemetry/telemetry/core/platform/profiler/v8_profiler.py
@@ -38,9 +38,9 @@
     # On Android pull the output file to the host.
     if self._platform_backend.GetOSName() == 'android':
       host_output_file = '%s.log' % self._output_path
-      self._browser_backend.device.PullFile(output_file, host_output_file)
+      self._browser_backend.adb.device().PullFile(output_file, host_output_file)
       # Clean the device
-      self._browser_backend.device.RunShellCommand('rm %s' % output_file)
+      self._browser_backend.adb.device().RunShellCommand('rm %s' % output_file)
       output_file = host_output_file
     print 'V8 profile saved as %s' % output_file
     print 'To view, open in ' \