Implement basic mojo Permission service and use it for Geolocation.

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index a5891146486b4618991cd2593c788072d41ab9b2..e96f3a2a07d6060facb44ae3b3f42bdf62382058 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -25,6 +25,8 @@
 #include "content/browser/frame_host/render_frame_proxy_host.h"
 #include "content/browser/frame_host/render_widget_host_view_child_frame.h"
 #include "content/browser/geolocation/geolocation_service_context.h"
+#include "content/browser/permissions/permission_service_context.h"
+#include "content/browser/permissions/permission_service_impl.h"
 #include "content/browser/renderer_host/input/input_router.h"
 #include "content/browser/renderer_host/input/timeout_monitor.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
@@ -1267,6 +1269,12 @@ void RenderFrameHostImpl::RegisterMojoServices() {
                    base::Bind(&RenderFrameHostImpl::DidUseGeolocationPermission,
                               base::Unretained(this))));
   }
+
+  scoped_ptr<PermissionServiceContext> permission_service_context(
+      new PermissionServiceContext(this));
+  GetServiceRegistry()->AddService(
+      base::Bind(&PermissionServiceImpl::Create,
+                 base::Passed(&permission_service_context)));
 }
 
 void RenderFrameHostImpl::SetState(RenderFrameHostImplState rfh_state) {