TaskGraphRunner Group support

cc/raster/single_thread_task_graph_runner.cc

Index: cc/raster/single_thread_task_graph_runner.cc
diff --git a/cc/raster/single_thread_task_graph_runner.cc b/cc/raster/single_thread_task_graph_runner.cc
index 24994c953df20d703063d369d128bfed03c1ac20..2e255fd57e5280fa14c09faa749edb96d713290f 100644
--- a/cc/raster/single_thread_task_graph_runner.cc
+++ b/cc/raster/single_thread_task_graph_runner.cc
@@ -57,6 +57,9 @@ void SingleThreadTaskGraphRunner::ScheduleTasks(NamespaceToken token,
   DCHECK(token.IsValid());
   DCHECK(!TaskGraphWorkQueue::DependencyMismatch(graph));
 
+  // SingleThreadTaskGraphRunner does not care about categories.
+  TaskGraphWorkQueue::UncategorizeTaskGraph(graph);
+
   {
     base::AutoLock lock(lock_);
 
@@ -132,7 +135,7 @@ void SingleThreadTaskGraphRunner::RunTaskWithLockAcquired() {
 
   lock_.AssertAcquired();
 
-  auto prioritized_task = work_queue_.GetNextTaskToRun();
+  auto prioritized_task = work_queue_.GetNextTaskToRun(0u /* category */);
   Task* task = prioritized_task.task;
 
   // Call WillRun() before releasing |lock_| and running task.