Replace device_sensor browsertest by service unittest.

device/sensors/public/cpp/BUILD.gn

 # Copyright 2016 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 target contains only those files that are shared by the Device Sensors
 # implementation and all Device Sensors clients, including Blink. Add a file
 # here only if it meets the following constraints:
 # (1) It is *necessary* to use the file to consume Device Sensors (the
 # current files define structs that are used as a consistent interpretation of
 # shared memory by the Device Sensor and its clients).
@@ skipping 21 matching lines @@
 # dependencies on the STL and Chromium code.
 source_set("full") {
   sources = [
     "device_light_data.h",
     "device_light_hardware_buffer.h",
     "device_motion_hardware_buffer.h",
     "device_orientation_hardware_buffer.h",
     "device_sensors_consts.h",
     "device_util_mac.cc",
     "device_util_mac.h",
+    "shared_memory_seqlock_reader.cc",
+    "shared_memory_seqlock_reader.h",
   ]
 
+  deps = [
+    "//base",
+  ]
   public_deps = [
     ":shared_with_blink",
     "//device/base/synchronization",
   ]
 }