TaskGraphRunner Group support

cc/raster/tile_task_worker_pool_unittest.cc

Index: cc/raster/tile_task_worker_pool_unittest.cc
diff --git a/cc/raster/tile_task_worker_pool_unittest.cc b/cc/raster/tile_task_worker_pool_unittest.cc
index 62239c16ac59749db9565954e7d13e7341f70a54..82058b270797f9a81ecf10d476144cd3b78b7aad 100644
--- a/cc/raster/tile_task_worker_pool_unittest.cc
+++ b/cc/raster/tile_task_worker_pool_unittest.cc
@@ -19,6 +19,7 @@
 #include "cc/raster/one_copy_tile_task_worker_pool.h"
 #include "cc/raster/raster_buffer.h"
 #include "cc/raster/synchronous_task_graph_runner.h"
+#include "cc/raster/task_category.h"
 #include "cc/raster/tile_task_runner.h"
 #include "cc/raster/zero_copy_tile_task_worker_pool.h"
 #include "cc/resources/resource_pool.h"
@@ -194,7 +195,8 @@ class TileTaskWorkerPoolTest
 
     for (RasterTaskVector::const_iterator it = tasks_.begin();
          it != tasks_.end(); ++it) {
-      graph_.nodes.emplace_back(it->get(), priority++, 0 /* dependencies */);
+      graph_.nodes.emplace_back(it->get(), TASK_CATEGORY_HIGH_PRIORITY,
+                                priority++, 0 /* dependencies */);
     }
 
     tile_task_worker_pool_->AsTileTaskRunner()->ScheduleTasks(&graph_);