cc: GPU rasterize tiles synchronously in PrepareToDraw

cc/resources/zero_copy_raster_worker_pool.cc

Index: cc/resources/zero_copy_raster_worker_pool.cc
diff --git a/cc/resources/zero_copy_raster_worker_pool.cc b/cc/resources/zero_copy_raster_worker_pool.cc
index ca2bc9b01e10ed5ec68ba2c5791a60d0eb72d02c..657d89d52af0d29f9a953ffe39f78d2560dfe6ea 100644
--- a/cc/resources/zero_copy_raster_worker_pool.cc
+++ b/cc/resources/zero_copy_raster_worker_pool.cc
@@ -85,6 +85,10 @@ void ZeroCopyRasterWorkerPool::Shutdown() {
   task_graph_runner_->WaitForTasksToFinishRunning(namespace_token_);
 }
 
+void ZeroCopyRasterWorkerPool::RunTasks(RasterTaskQueue* queue) {
+  NOTIMPLEMENTED();
+}
+
 void ZeroCopyRasterWorkerPool::ScheduleTasks(RasterTaskQueue* queue) {
   TRACE_EVENT0("cc", "ZeroCopyRasterWorkerPool::ScheduleTasks");