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

services/device/public/cpp/generic_sensor/BUILD.gn

Index: services/device/public/cpp/generic_sensor/BUILD.gn
diff --git a/device/generic_sensor/public/cpp/BUILD.gn b/services/device/public/cpp/generic_sensor/BUILD.gn
similarity index 75%
rename from device/generic_sensor/public/cpp/BUILD.gn
rename to services/device/public/cpp/generic_sensor/BUILD.gn
index 420fffb27a80ad7a789d280e358bd9ff99bd322d..351ea5c9d0de1e0c2405ba59a039f1701a9b991a 100644
--- a/device/generic_sensor/public/cpp/BUILD.gn
+++ b/services/device/public/cpp/generic_sensor/BUILD.gn
@@ -2,7 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-component("cpp") {
+source_set("generic_sensor") {
   sources = [
     "platform_sensor_configuration.cc",
     "platform_sensor_configuration.h",
@@ -10,10 +10,8 @@ component("cpp") {
     "sensor_reading.h",
   ]
 
-  defines = [ "DEVICE_GENERIC_SENSOR_PUBLIC_IMPLEMENTATION" ]
-
   public_deps = [
-    "//device/generic_sensor/public/interfaces",
+    "//services/device/public/interfaces:generic_sensor",
   ]
 
   deps = [