Revert of gpu: GPU service scheduler.

gpu/ipc/service/gpu_channel_test_common.cc

Index: gpu/ipc/service/gpu_channel_test_common.cc
diff --git a/gpu/ipc/service/gpu_channel_test_common.cc b/gpu/ipc/service/gpu_channel_test_common.cc
index dddbd5da63d88333746e2acdfb3fc02f0c0a5f28..a236c68d60b9b9b8f122c3dc112bd5008c159028 100644
--- a/gpu/ipc/service/gpu_channel_test_common.cc
+++ b/gpu/ipc/service/gpu_channel_test_common.cc
@@ -79,12 +79,11 @@
           new GpuChannelManager(GpuPreferences(),
                                 GpuDriverBugWorkarounds(),
                                 channel_manager_delegate_.get(),
-                                nullptr, /* watchdog */
+                                nullptr /* watchdog */,
                                 task_runner_.get(),
                                 io_task_runner_.get(),
-                                nullptr, /* scheduler */
                                 sync_point_manager_.get(),
-                                nullptr, /* gpu_memory_buffer_factory */
+                                nullptr /* gpu_memory_buffer_factory */,
                                 GpuFeatureInfo(),
                                 GpuProcessActivityFlags())) {
   // We need GL bindings to actually initialize command buffers.