cc: Move internal::Task::did_schedule_ to internal::WorkerPoolTask.

cc/resources/raster_worker_pool_unittest.cc

Index: cc/resources/raster_worker_pool_unittest.cc
diff --git a/cc/resources/raster_worker_pool_unittest.cc b/cc/resources/raster_worker_pool_unittest.cc
index 02dffde0b5b5d3bb1f75f806187f0780adc949f4..9944bfcd54ad27aeda84ba948dd249914d2837e7 100644
--- a/cc/resources/raster_worker_pool_unittest.cc
+++ b/cc/resources/raster_worker_pool_unittest.cc
@@ -56,11 +56,15 @@ class TestRasterWorkerPoolTaskImpl : public internal::RasterWorkerPoolTask {
   // Overridden from internal::WorkerPoolTask:
   virtual void ScheduleOnOriginThread(internal::WorkerPoolTaskClient* client)
       OVERRIDE {
+    if (use_gpu_rasterization())
+      return;
     int stride;
     client->AcquireBufferForRaster(this, &stride);
   }
   virtual void CompleteOnOriginThread(internal::WorkerPoolTaskClient* client)
       OVERRIDE {
+    if (use_gpu_rasterization())
+      return;
     client->OnRasterCompleted(this, PicturePileImpl::Analysis());
   }
   virtual void RunReplyOnOriginThread() OVERRIDE {