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 5b11beacbf75c2dcb2b835d27a537cc1cbfcf447..1b409fe751e38163d43dc198f5993c57b5899e79 100644
--- a/components/scheduler/renderer/renderer_scheduler_impl.cc
+++ b/components/scheduler/renderer/renderer_scheduler_impl.cc
@@ -1128,6 +1128,19 @@ 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 web 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);
 }