Revert of Move //device/generic_sensor to be part of the internal implementation of the Device Service.

device/BUILD.gn

Index: device/BUILD.gn
diff --git a/device/BUILD.gn b/device/BUILD.gn
index fccb04ddaf1b689115bb22db4202a5b88dcb1d37..1d42690ffddeee4a05f284ed184d0060fb2dffc1 100644
--- a/device/BUILD.gn
+++ b/device/BUILD.gn
@@ -67,6 +67,8 @@
     "gamepad/gamepad_provider_unittest.cc",
     "gamepad/gamepad_service_unittest.cc",
     "gamepad/public/interfaces/gamepad_struct_traits_unittest.cc",
+    "generic_sensor/platform_sensor_and_provider_unittest_win.cc",
+    "generic_sensor/platform_sensor_provider_unittest.cc",
     "sensors/data_fetcher_shared_memory_base_unittest.cc",
     "sensors/sensor_manager_android_unittest.cc",
     "sensors/sensor_manager_chromeos_unittest.cc",
@@ -86,6 +88,8 @@
     "//device/gamepad/public/cpp:shared_with_blink",
     "//device/gamepad/public/interfaces",
     "//device/gamepad/public/interfaces:gamepad_struct_traits_test",
+    "//device/generic_sensor",
+    "//device/generic_sensor:testing",
     "//device/geolocation:unittests",
     "//device/power_save_blocker",
     "//device/sensors",
@@ -103,6 +107,11 @@
     "//url",
   ]
 
+  if (!is_linux_without_udev) {
+    sources +=
+        [ "generic_sensor/platform_sensor_and_provider_unittest_linux.cc" ]
+  }
+
   # HID and Serial:
   # Android doesn't compile.
   # Linux, requires udev.
@@ -238,6 +247,12 @@
       "bluetooth/bluetooth_low_energy_win_fake.cc",
       "bluetooth/bluetooth_low_energy_win_fake.h",
     ]
+
+    # Needed for "generic_sensor/platform_sensor_and_provider_unittest_win.cc"
+    libs = [
+      "propsys.lib",
+      "sensorsapi.lib",
+    ]
   }
 
   if (enable_vr) {