Fix adb usage in tools/telemetry/telemetry/core/platform/profiler after https://codereview.chromium…

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

Index: tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py
diff --git a/tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py b/tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py
index 4906cf89cdf598a716afe1ec8016a207b7fbe4f2..96c065223302eb55dc5b0cd6eb2b489df1959857 100644
--- a/tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py
+++ b/tools/telemetry/telemetry/core/platform/profiler/perf_profiler.py
@@ -80,15 +80,16 @@ class _SingleProcessPerfProfiler(object):
     cmd_prefix = []
     perf_args = ['record', '--pid', str(pid)]
     if self._is_android:
-      cmd_prefix = ['adb', '-s', browser_backend.adb.device_serial(), 'shell',
-                    perf_binary]
+      cmd_prefix = ['adb', '-s', browser_backend.device.adb.GetDeviceSerial(),
+                   'shell', perf_binary]
       perf_args += _PERF_OPTIONS_ANDROID
       output_file = os.path.join('/sdcard', 'perf_profiles',
                                  os.path.basename(output_file))
       self._device_output_file = output_file
-      browser_backend.adb.RunShellCommand(
+      browser_backend.device.RunShellCommand(
           'mkdir -p ' + os.path.dirname(self._device_output_file))
-      browser_backend.adb.RunShellCommand('rm -f ' + self._device_output_file)
+      browser_backend.device.RunShellCommand(
+          'rm -f ' + self._device_output_file)
     else:
       cmd_prefix = [perf_binary]
     perf_args += ['--output', output_file] + _PERF_OPTIONS
@@ -103,7 +104,7 @@ class _SingleProcessPerfProfiler(object):
                       'To collect a full profile rerun with '
                       '"--extra-browser-args=--single-process"')
     if self._is_android:
-      device = self._browser_backend.adb.device()
+      device = self._browser_backend.device
       try:
         binary_name = os.path.basename(self._perf_binary)
         device.KillAll(binary_name, signum=signal.SIGINT, blocking=True)
@@ -127,7 +128,7 @@ Try rerunning this script under sudo or setting
     cmd = '%s report -n -i %s' % (_NicePath(self._perfhost_binary),
                                   self._output_file)
     if self._is_android:
-      device = self._browser_backend.adb.device()
+      device = self._browser_backend.device
       try:
         device.PullFile(self._device_output_file, self._output_file)
       except:
@@ -177,7 +178,7 @@ class PerfProfiler(profiler.Profiler):
     perf_binary = perfhost_binary = _InstallPerfHost()
     try:
       if platform_backend.GetOSName() == 'android':
-        device = browser_backend.adb.device()
+        device = browser_backend.device
         perf_binary = android_profiling_helper.PrepareDeviceForPerf(device)
         self._perf_control = perf_control.PerfControl(device)
         self._perf_control.SetPerfProfilingMode()