GRC: Hook up the frame-level CoordinationUnit

chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc

Index: chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc
diff --git a/chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc b/chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc
index cfa88b7309c048992a75f07789e094e8cff35c8b..074c881f6dbe56b3aedbf74a3019e82a7b010202 100644
--- a/chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc
+++ b/chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.cc
@@ -4,6 +4,8 @@
 
 #include "chrome/browser/resource_coordinator/resource_coordinator_web_contents_observer.h"
 
+#include "content/public/browser/navigation_handle.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/common/service_manager_connection.h"
 #include "services/resource_coordinator/public/cpp/resource_coordinator_features.h"
 
@@ -35,3 +37,15 @@ void ResourceCoordinatorWebContentsObserver::WasHidden() {
   tab_resource_coordinator_->SendEvent(
       resource_coordinator::EventType::kOnWebContentsHidden);
 }
+
+void ResourceCoordinatorWebContentsObserver::DidFinishNavigation(
+    content::NavigationHandle* navigation_handle) {
+  if (!navigation_handle->HasCommitted() || navigation_handle->IsErrorPage() ||
+      navigation_handle->IsSameDocument()) {
+    return;
+  }
+
+  auto* frame_resource_coordinator =
+      navigation_handle->GetRenderFrameHost()->GetFrameResourceCoordinator();
+  tab_resource_coordinator_->AddChild(*frame_resource_coordinator);
+}