Implement frame attribution (FrameBlamer)

components/scheduler/renderer/renderer_scheduler_impl.cc

Index: components/scheduler/renderer/renderer_scheduler_impl.cc
diff --git a/components/scheduler/renderer/renderer_scheduler_impl.cc b/components/scheduler/renderer/renderer_scheduler_impl.cc
index f24e234f8cd3760bd5d912e634e8ae084c275fd9..de02fab4acc07b1f6ec624c02a50d6003c529b9f 100644
--- a/components/scheduler/renderer/renderer_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_scheduler_impl.cc
@@ -1127,6 +1127,19 @@ void RendererSchedulerImpl::ResetForNavigationLocked() {
   UpdatePolicyLocked(UpdateType::MAY_EARLY_OUT_IF_POLICY_UNCHANGED);
 }
 
+void RendererSchedulerImpl::SetThreadBlameContext(
+    base::debug::BlameContextBase* blame_context) {
+  // Any task that runs in the default task runners belongs to the context of
+  // the current thread (as opposed to a particular frame). Note that the task
+  // itself may still enter a more specific blame context if necessary.
+  control_task_runner_->SetBlameContext(blame_context);
+  DefaultTaskRunner()->SetBlameContext(blame_context);
+  default_loading_task_runner_->SetBlameContext(blame_context);
+  default_timer_task_runner_->SetBlameContext(blame_context);
+  compositor_task_runner_->SetBlameContext(blame_context);
+  idle_helper_.IdleTaskRunner()->SetBlameContext(blame_context);
+}
+
 void RendererSchedulerImpl::RegisterTimeDomain(TimeDomain* time_domain) {
   helper_.RegisterTimeDomain(time_domain);
 }