[Android] Remove adb_commands from telemetry.

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

Index: tools/telemetry/telemetry/core/platform/profiler/android_traceview_profiler.py
diff --git a/tools/telemetry/telemetry/core/platform/profiler/android_traceview_profiler.py b/tools/telemetry/telemetry/core/platform/profiler/android_traceview_profiler.py
index 3f7a080f19d8f7f638ee490483078e78116e8727..5ed86b6e03cda95ebf57747691671e1e1ec6de15 100644
--- a/tools/telemetry/telemetry/core/platform/profiler/android_traceview_profiler.py
+++ b/tools/telemetry/telemetry/core/platform/profiler/android_traceview_profiler.py
@@ -24,21 +24,21 @@ class AndroidTraceviewProfiler(profiler.Profiler):
     super(AndroidTraceviewProfiler, self).__init__(
         browser_backend, platform_backend, output_path, state)
 
-    if self._browser_backend.adb.device().FileExists(self._DEFAULT_DEVICE_DIR):
-      self._browser_backend.adb.RunShellCommand(
+    if self._browser_backend.device.FileExists(self._DEFAULT_DEVICE_DIR):
+      self._browser_backend.device.RunShellCommand(
           'rm ' + os.path.join(self._DEFAULT_DEVICE_DIR, '*'))
     else:
-      self._browser_backend.adb.RunShellCommand(
+      self._browser_backend.device.RunShellCommand(
           'mkdir -p ' + self._DEFAULT_DEVICE_DIR)
-      self._browser_backend.adb.RunShellCommand(
+      self._browser_backend.device.RunShellCommand(
           'chmod 777 ' + self._DEFAULT_DEVICE_DIR)
 
     self._trace_files = []
     for pid in self._GetProcessOutputFileMap().iterkeys():
       device_dump_file = '%s/%s.trace' % (self._DEFAULT_DEVICE_DIR, pid)
       self._trace_files.append((pid, device_dump_file))
-      self._browser_backend.adb.RunShellCommand('am profile %s start %s' %
-                                                (pid, device_dump_file))
+      self._browser_backend.device.RunShellCommand(
+          'am profile %s start %s' % (pid, device_dump_file))
 
 
   @classmethod
@@ -54,13 +54,13 @@ class AndroidTraceviewProfiler(profiler.Profiler):
   def CollectProfile(self):
     output_files = []
     for pid, trace_file in self._trace_files:
-      self._browser_backend.adb.RunShellCommand('am profile %s stop' % pid)
+      self._browser_backend.device.RunShellCommand('am profile %s stop' % pid)
       # pylint: disable=cell-var-from-loop
       util.WaitFor(lambda: self._FileSize(trace_file) > 0, timeout=10)
       output_files.append(trace_file)
-    self._browser_backend.adb.device().PullFile(
+    self._browser_backend.device.PullFile(
         self._DEFAULT_DEVICE_DIR, self._output_path)
-    self._browser_backend.adb.RunShellCommand(
+    self._browser_backend.device.RunShellCommand(
         'rm ' + os.path.join(self._DEFAULT_DEVICE_DIR, '*'))
     print 'Traceview profiles available in ', self._output_path
     print 'Use third_party/android_tools/sdk/tools/monitor '
@@ -69,6 +69,6 @@ class AndroidTraceviewProfiler(profiler.Profiler):
 
   def _FileSize(self, file_name):
     try:
-      return self._browser_backend.adb.device().Stat(file_name).st_size
+      return self._browser_backend.device.Stat(file_name).st_size
     except device_errors.CommandFailedError:
       return 0