Make it possible to disable dbus on linux

content/content_browser.gypi

Index: content/content_browser.gypi
diff --git a/content/content_browser.gypi b/content/content_browser.gypi
index 4032dda06d28d339d6f41fc0efb143be572efc22..66aeb14bdca42c36f30b248db0a569625f87041f 100644
--- a/content/content_browser.gypi
+++ b/content/content_browser.gypi
@@ -588,6 +588,7 @@
     'browser/plugin_service_impl.h',
     'browser/power_save_blocker_android.cc',
     'browser/power_save_blocker_chromeos.cc',
+    'browser/power_save_blocker_empty.cc',
     'browser/power_save_blocker_impl.cc',
     'browser/power_save_blocker_impl.h',
     'browser/power_save_blocker_linux.cc',
@@ -1080,6 +1081,23 @@
         }],
       ],
     }],
+    ['OS=="linux" and use_dbus==0', {
+      'sources!': [
+        'browser/power_save_blocker_linux.cc',
+        'browser/geolocation/wifi_data_provider_linux.cc',
+      ],
+      'dependencies!': [
+        '../build/linux/system.gyp:dbus',
+        '../dbus/dbus.gyp:dbus',
+      ],
+    }],
+    ['OS=="win" or OS=="mac" or (OS=="linux" and use_dbus==1)', {
+      'sources!': [
+        'browser/geolocation/empty_device_data_provider.cc',
+        'browser/geolocation/empty_device_data_provider.h',
+        'browser/power_save_blocker_empty.cc',
+      ],
+    }],
     ['OS=="linux" and use_aura==1', {
       'dependencies': [
         '../build/linux/system.gyp:dbus',