diff --git a/content/browser/geolocation/geolocation_service_impl.cc b/content/browser/geolocation/geolocation_service_impl.cc
index 3d2e5b28dbcaa..1f6de890236b2 100644
--- a/content/browser/geolocation/geolocation_service_impl.cc
+++ b/content/browser/geolocation/geolocation_service_impl.cc
@@ -182,6 +182,12 @@ void GeolocationServiceImpl::CreateGeolocationWithPermissionResult(
   auto requesting_url =
       render_frame_host_->GetMainFrame()->GetLastCommittedURL();
 
+  LOG(ERROR) << "[POC] CreateGeolocation: requesting_origin_="
+             << requesting_origin_.Serialize()
+             << " requesting_url=" << requesting_url.spec()
+             << " (url same-origin with origin? "
+             << requesting_origin_.IsSameOriginWith(requesting_url) << ")";
+
   bool has_precise_permission =
       permission_level == GeolocationPermissionLevel::kPrecise;
   geolocation_context->BindGeolocation(
@@ -210,6 +216,9 @@ void GeolocationServiceImpl::HandlePermissionResultChange(
   if (!geolocation_context) {
     return;
   }
+  LOG(ERROR) << "[POC] HandlePermissionResultChange fired: status="
+             << static_cast<int>(permission_result.status)
+             << " requesting_origin_=" << requesting_origin_.Serialize();
 
   GeolocationPermissionLevel permission_level =
       GetPermissionLevel(permission_result);
diff --git a/services/device/geolocation/geolocation_context.cc b/services/device/geolocation/geolocation_context.cc
index 27a253855bb2d..b2891cec98405 100644
--- a/services/device/geolocation/geolocation_context.cc
+++ b/services/device/geolocation/geolocation_context.cc
@@ -44,8 +44,16 @@ void GeolocationContext::BindGeolocation(
 void GeolocationContext::OnPermissionUpdated(
     const url::Origin& origin,
     mojom::GeolocationPermissionLevel permission_level) {
+  size_t before = impls_.size();
+  LOG(ERROR) << "[POC] OnPermissionUpdated: origin=" << origin.Serialize()
+             << " level=" << static_cast<int>(permission_level)
+             << " impls_before=" << before;
   std::erase_if(impls_, [&origin, &permission_level](const auto& impl) {
-    if (!origin.IsSameOriginWith(impl->url())) {
+    bool same = origin.IsSameOriginWith(impl->url());
+    LOG(ERROR) << "[POC]   impl url='" << impl->url().spec()
+               << "' IsSameOriginWith=" << same
+               << (same ? " -> will process" : " -> SKIPPED (orphaned)");
+    if (!same) {
       return false;
     }
     // Pass the permission update to the GeolocationImpl, and erase the impl if
@@ -55,6 +63,12 @@ void GeolocationContext::OnPermissionUpdated(
         permission_level == mojom::GeolocationPermissionLevel::kDenied;
     return should_erase;
   });
+  LOG(ERROR) << "[POC] OnPermissionUpdated: impls_after=" << impls_.size()
+             << (impls_.size() == before && before > 0 &&
+                         permission_level ==
+                             mojom::GeolocationPermissionLevel::kDenied
+                     ? "  *** BUG: revocation did NOT erase impl ***"
+                     : "");
   return;
 }