Remove image_decode_tasks_enabled flag.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 7a77da1d6d5ea74edee558d5afb9a60958644a90..0ec03c4de7163e041af6116538ca401dd2f0fc20 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -842,10 +842,6 @@ void RenderThreadImpl::Init(
   DCHECK(parsed_num_raster_threads) << string_value;
   DCHECK_GT(num_raster_threads, 0);
 
-  // TODO(vmpstr): If the flag sticks, we should clean it up and always have
-  // image decode tasks.
-  are_image_decode_tasks_enabled_ = true;
-
   categorized_worker_pool_->Start(num_raster_threads);
 
   discardable_memory::mojom::DiscardableSharedMemoryManagerPtr manager_ptr;
@@ -1574,10 +1570,6 @@ cc::TaskGraphRunner* RenderThreadImpl::GetTaskGraphRunner() {
   return categorized_worker_pool_->GetTaskGraphRunner();
 }
 
-bool RenderThreadImpl::AreImageDecodeTasksEnabled() {
-  return are_image_decode_tasks_enabled_;
-}
-
 bool RenderThreadImpl::IsThreadedAnimationEnabled() {
   return is_threaded_animation_enabled_;
 }