Delete outdated comment

This comment was added in http://crrev.com/335223003; however, it's no
longer applicable as of http://crrev.com/1928863002. The FeatureList
initialization occurs before RendererMain is reached.

Change-Id: I6a0609de03aa1c69319021adf0ccea9d76bac2cf
Reviewed-on: https://chromium-review.googlesource.com/c/1343253
Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#609916}

content/renderer/renderer_main.cc

@@ -153,7 +153,6 @@ int RendererMain(const MainFunctionParams& parameters) {
       blink::scheduler::WebThreadScheduler::CreateMainThreadScheduler(
           initial_virtual_time));
 
-  // PlatformInitialize uses FieldTrials, so this must happen later.
   platform.PlatformInitialize();
 
 #if BUILDFLAG(ENABLE_PLUGINS)