TaskGraphRunner Group support

cc/raster/synchronous_task_graph_runner.cc

Index: cc/raster/synchronous_task_graph_runner.cc
diff --git a/cc/raster/synchronous_task_graph_runner.cc b/cc/raster/synchronous_task_graph_runner.cc
index ed05cfb5823127277020491b4b5fbb0d6e3abbd2..759c5b87f0ba34d965e84cf24880b82d2c033fdc 100644
--- a/cc/raster/synchronous_task_graph_runner.cc
+++ b/cc/raster/synchronous_task_graph_runner.cc
@@ -28,6 +28,9 @@ void SynchronousTaskGraphRunner::ScheduleTasks(NamespaceToken token,
   DCHECK(token.IsValid());
   DCHECK(!TaskGraphWorkQueue::DependencyMismatch(graph));
 
+  // SynchronousTaskGraphRunner does not care about categories.
+  TaskGraphWorkQueue::UncategorizeTaskGraph(graph);
+
   work_queue_.ScheduleTasks(token, graph);
 }
 
@@ -64,7 +67,7 @@ void SynchronousTaskGraphRunner::RunUntilIdle() {
 void SynchronousTaskGraphRunner::RunTask() {
   TRACE_EVENT0("toplevel", "SynchronousTaskGraphRunner::RunTask");
 
-  auto prioritized_task = work_queue_.GetNextTaskToRun();
+  auto prioritized_task = work_queue_.GetNextTaskToRun(0u /* category */);
 
   Task* task = prioritized_task.task;
   task->WillRun();