Revert of Partially convert geolocation IPC to Mojo.

content/common/geolocation_messages.h

Index: content/common/geolocation_messages.h
diff --git a/content/common/geolocation_messages.h b/content/common/geolocation_messages.h
index b66a1919b7986c8f6feb9f70b32628f2d97bb109..f89424ceccc7e67caa5cb1d8917d5adc032a9ec5 100644
--- a/content/common/geolocation_messages.h
+++ b/content/common/geolocation_messages.h
@@ -34,6 +34,12 @@
                     int /* bridge_id */,
                     bool /* is_allowed */)
 
+// Sent after GeolocationHostMsg_StartUpdating iff the user has granted
+// permission and we have a position available or an error occurs (such as
+// permission denied, position unavailable, etc.)
+IPC_MESSAGE_ROUTED1(GeolocationMsg_PositionUpdated,
+                    content::Geoposition /* geoposition */)
+
 // Messages sent from the renderer to the browser.
 
 // The |bridge_id| representing |host| is requesting permission to access
@@ -44,3 +50,16 @@
                      int /* bridge_id */,
                      GURL /* origin in the frame requesting geolocation */,
                      bool /* user_gesture */)
+
+// The render view requests the Geolocation service to start updating.
+// This is an asynchronous call, and the browser process may eventually reply
+// with the updated geoposition, or an error (access denied, location
+// unavailable, etc.)
+IPC_MESSAGE_ROUTED2(GeolocationHostMsg_StartUpdating,
+                     GURL /* origin in the frame requesting geolocation */,
+                     bool /* enable_high_accuracy */)
+
+// The  render view requests Geolocation service to stop updating.
+// Note that the geolocation service may continue to fetch geolocation data
+// for other origins.
+IPC_MESSAGE_ROUTED0(GeolocationHostMsg_StopUpdating)