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

chrome/browser/about_flags.cc

Index: chrome/browser/about_flags.cc
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index b04f658d2436ffbe251d4ed5de441249e796dcff..efb63d3613c7a2f1d296e0321866ad5b89ca2295 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -2049,7 +2049,8 @@ const FeatureEntry kFeatureEntries[] = {
      IDS_FLAGS_SAVEAS_MENU_LABEL_EXPERIMENT_DESCRIPTION, kOsDesktop,
      SINGLE_VALUE_TYPE(switches::kEnableSaveAsMenuLabelExperiment)},
     {"enable-generic-sensor", IDS_FLAGS_ENABLE_GENERIC_SENSOR_NAME,
-     IDS_FLAGS_ENABLE_GENERIC_SENSOR_DESCRIPTION, kOsAndroid | kOsMac,
+     IDS_FLAGS_ENABLE_GENERIC_SENSOR_DESCRIPTION,
+     kOsAndroid | kOsMac | kOsLinux | kOsCrOS,
      FEATURE_VALUE_TYPE(features::kGenericSensor)},
     {"expensive-background-timer-throttling",
      IDS_FLAGS_EXPENSIVE_BACKGROUND_TIMER_THROTTLING_NAME,