[sensors] Ambient light sensor implementation for ChromeOS and Linux.

device/generic_sensor/BUILD.gn

Index: device/generic_sensor/BUILD.gn
diff --git a/device/generic_sensor/BUILD.gn b/device/generic_sensor/BUILD.gn
index d0afbb309310fa45d4136b6f4ee6e29669cccd8b..282cfd9dcd9465b405efcb2652cf8a9e985097e4 100644
--- a/device/generic_sensor/BUILD.gn
+++ b/device/generic_sensor/BUILD.gn
@@ -57,6 +57,21 @@ component("generic_sensor") {
 
     libs = [ "IOKit.framework" ]
   }
+
+  if (is_linux) {
+    sources += [
+      "iio/platform_sensor_utils_iio.cc",
+      "iio/platform_sensor_utils_iio.h",
+      "iio/sensor_data_iio.cc",
+      "iio/sensor_data_iio.h",
+      "platform_sensor_iio.cc",
+      "platform_sensor_iio.h",
+      "platform_sensor_provider_iio.cc",
+      "platform_sensor_provider_iio.h",
+    ]
+
+    deps += [ "//device/sensors/public/cpp" ]
+  }
 }
 
 if (is_android) {