Remove cc::OrderedSimpleTaskRunner from DirectLayerTreeFrameSink tests.

Bug: 863350
Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I7f4ade68fd7d504d06f276660e66ee7c01f20806
Reviewed-on: https://chromium-review.googlesource.com/1136549Reviewed-by: Sami Kyöstilä <skyostil@chromium.org>
Commit-Queue: Greg Kraynov <kraynov@chromium.org>
Cr-Commit-Position: refs/heads/master@{#574932}

components/viz/service/frame_sinks/direct_layer_tree_frame_sink_unittest.cc

@@ -6,7 +6,7 @@
 
 #include <memory>
 
-#include "base/test/simple_test_tick_clock.h"
+#include "base/test/test_mock_time_task_runner.h"
 #include "cc/test/fake_layer_tree_frame_sink_client.h"
 #include "components/viz/common/display/renderer_settings.h"
 #include "components/viz/common/frame_sinks/begin_frame_source.h"
@@ -22,7 +22,6 @@
 #include "components/viz/test/begin_frame_args_test.h"
 #include "components/viz/test/compositor_frame_helpers.h"
 #include "components/viz/test/fake_output_surface.h"
-#include "components/viz/test/ordered_simple_task_runner.h"
 #include "components/viz/test/test_context_provider.h"
 #include "components/viz/test/test_gpu_memory_buffer_manager.h"
 #include "components/viz/test/test_shared_bitmap_manager.h"
@@ -64,8 +63,8 @@ class TestCompositorFrameSinkSupportManager
 class DirectLayerTreeFrameSinkTest : public testing::Test {
  public:
   DirectLayerTreeFrameSinkTest()
-      : now_src_(new base::SimpleTestTickClock()),
-        task_runner_(new cc::OrderedSimpleTaskRunner(now_src_.get(), true)),
+      : task_runner_(base::MakeRefCounted<base::TestMockTimeTaskRunner>(
+            base::TestMockTimeTaskRunner::Type::kStandalone)),
         display_size_(1920, 1080),
         display_rect_(display_size_),
         frame_sink_manager_(&bitmap_manager_),
@@ -126,8 +125,7 @@ class DirectLayerTreeFrameSinkTest : public testing::Test {
   }
 
  protected:
-  std::unique_ptr<base::SimpleTestTickClock> now_src_;
-  scoped_refptr<cc::OrderedSimpleTaskRunner> task_runner_;
+  scoped_refptr<base::TestMockTimeTaskRunner> task_runner_;
 
   const gfx::Size display_size_;
   const gfx::Rect display_rect_;