cc: Remove main thread rendering stats

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 1af657a3d0ead51ef2076e2a3133121699e800f1..439304aa3179cf10f4ba91c255346ecdc43acb14 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -212,12 +212,6 @@ void SingleThreadProxy::DoCommit() {
     DCHECK(!scroll_info->scrolls.size());
     DCHECK_EQ(1.f, scroll_info->page_scale_delta);
 #endif
-
-    RenderingStatsInstrumentation* stats_instrumentation =
-        layer_tree_host_->rendering_stats_instrumentation();
-    benchmark_instrumentation::IssueMainThreadRenderingStatsEvent(
-        stats_instrumentation->main_thread_rendering_stats());
-    stats_instrumentation->AccumulateAndClearMainThreadStats();
   }
 
   if (layer_tree_host_->settings().impl_side_painting) {