Battery Status API: implementation for Linux.

content/content_browser.gypi

Index: content/content_browser.gypi
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index 389fcbc1658209c2775bdab0ea2d2193cc1c78e2..5a5cd33e5e356c9fea3280042f588e74b7710f9c 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -370,6 +370,8 @@
       'browser/battery_status/battery_status_manager_android.h',
       'browser/battery_status/battery_status_manager_chromeos.cc',
       'browser/battery_status/battery_status_manager_default.cc',
+      'browser/battery_status/battery_status_manager_linux.cc',
+      'browser/battery_status/battery_status_manager_linux.h',
       'browser/battery_status/battery_status_manager_mac.cc',
       'browser/battery_status/battery_status_manager.h',
       'browser/battery_status/battery_status_message_filter.cc',
@@ -1841,6 +1843,7 @@
     }],
     ['OS == "linux" and use_dbus==1', {
       'sources!': [
+        'browser/battery_status/battery_status_manager_default.cc',
         'browser/geolocation/empty_wifi_data_provider.cc',
       ],
       'dependencies': [
@@ -1849,6 +1852,7 @@
       ],
     }, {  # OS != "linux" or use_dbus==0
       'sources!': [
+        'browser/battery_status/battery_status_manager_linux.cc',
         'browser/geolocation/wifi_data_provider_linux.cc',
       ],
     }],