cc: Remove ScheduleOnOriginThread() and CompleteOnOriginThread().

cc/raster/tile_task_runner.cc

Index: cc/raster/tile_task_runner.cc
diff --git a/cc/raster/tile_task_runner.cc b/cc/raster/tile_task_runner.cc
index 50e8805d938136719e73c7c4b191144035d55180..e97c630af56845f154c4e59fe45e32eba95f9191 100644
--- a/cc/raster/tile_task_runner.cc
+++ b/cc/raster/tile_task_runner.cc
@@ -7,35 +7,14 @@
 
 namespace cc {
 
-TileTask::TileTask() : did_schedule_(false), did_complete_(false) {
-}
+TileTask::TileTask() : did_complete_(false) {}
 
 TileTask::~TileTask() {
-  DCHECK(!did_schedule_);
   DCHECK(!did_run_ || did_complete_);
 }
 
-void TileTask::WillSchedule() {
-  DCHECK(!did_schedule_);
-}
-
-void TileTask::DidSchedule() {
-  did_schedule_ = true;
-  did_complete_ = false;
-}
-
-bool TileTask::HasBeenScheduled() const {
-  return did_schedule_;
-}
-
-void TileTask::WillComplete() {
-  DCHECK(!did_complete_);
-}
-
 void TileTask::DidComplete() {
-  DCHECK(did_schedule_);
   DCHECK(!did_complete_);
-  did_schedule_ = false;
   did_complete_ = true;
 }