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

services/device/public/interfaces/BUILD.gn

Index: services/device/public/interfaces/BUILD.gn
diff --git a/services/device/public/interfaces/BUILD.gn b/services/device/public/interfaces/BUILD.gn
index ea9dd259754799d5d553bdbef50b522ff7ff381d..e4f3123e4cff4eef64446f03a8ca78b7bd06bd86 100644
--- a/services/device/public/interfaces/BUILD.gn
+++ b/services/device/public/interfaces/BUILD.gn
@@ -22,6 +22,20 @@ mojom("interfaces") {
   use_once_callback = false
 }
 
+mojom("generic_sensor") {
+  sources = [
+    "sensor.mojom",
+    "sensor_provider.mojom",
+  ]
+
+  public_deps = [
+    ":constants",
+  ]
+
+  # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
+  use_once_callback = false
+}
+
 mojom("constants") {
   sources = [
     "constants.mojom",