Remove completed TODO in OptimizationGuideService

crbug.com/783246 is the fixed bug tracking it.

Change-Id: I873b1eda8d3e43abd191779e6e503df5e31157d6
Reviewed-on: https://chromium-review.googlesource.com/c/1338729Reviewed-by: Tarun Bansal <tbansal@chromium.org>
Reviewed-by: Doug Arnett <dougarnett@chromium.org>
Commit-Queue: Jered Gray <jegray@chromium.org>
Cr-Commit-Position: refs/heads/master@{#608870}

components/optimization_guide/optimization_guide_service.cc

@@ -77,9 +77,6 @@ void OptimizationGuideService::ProcessHintsInBackground(
     const ComponentInfo& component_info) {
   DCHECK(background_task_runner_->RunsTasksInCurrentSequence());
 
-  // TODO(crbug.com/783246): Add crash loop detection to ensure bad component
-  // updates do not crash Chrome.
-
   if (!component_info.hints_version.IsValid()) {
     RecordProcessHintsResult(ProcessHintsResult::FAILED_INVALID_PARAMETERS);
     return;