Battery Status API: implementation for Linux.

content/browser/BUILD.gn

Index: content/browser/BUILD.gn
diff --git a/content/browser/BUILD.gn b/content/browser/BUILD.gn
index 87abb7f77f54676d840b9a47af835b245f52c28a..31d04865b957648b0f35f3d52adf63636679f3c1 100644
--- a/content/browser/BUILD.gn
+++ b/content/browser/BUILD.gn
@@ -400,12 +400,16 @@ source_set("browser") {
   if (is_linux) {
     if (use_dbus) {
       sources -= [
+        "battery_status/battery_status_manager_default.cc",
         "geolocation/empty_wifi_data_provider.cc",
       ]
       deps += [ "//dbus" ]
     } else {
       # This will already have gotten removed for all non-Linux cases.
-       sources -= [ "geolocation/wifi_data_provider_linux.cc" ]
+       sources -= [
+         "battery_status/battery_status_manager_linux.cc",
+         "geolocation/wifi_data_provider_linux.cc",
+       ]
     }
   }
 }