Make it possible to disable dbus on linux

content/browser/geolocation/empty_device_data_provider.cc

Index: content/browser/geolocation/empty_device_data_provider.cc
diff --git a/content/browser/geolocation/empty_device_data_provider.cc b/content/browser/geolocation/empty_device_data_provider.cc
index 57e25b0a5046acbd0c5d16a4291a6a4ad567a1ce..5106b9a124ac11ce3538dbaeea020e2adbde5272 100644
--- a/content/browser/geolocation/empty_device_data_provider.cc
+++ b/content/browser/geolocation/empty_device_data_provider.cc
@@ -6,13 +6,13 @@
 
 namespace content {
 
-// Only define for platforms that lack a real wifi data provider.
-#if !defined(OS_WIN) && !defined(OS_MACOSX) && !defined(OS_LINUX)
+// This definition is only compiled on platforms that lack a real wifi
+// data provider.
+
 // static
 template<>
 WifiDataProviderImplBase* WifiDataProvider::DefaultFactoryFunction() {
   return new EmptyDeviceDataProvider<WifiData>();
 }
-#endif
 
 }  // namespace content