Mac: Do not ask to handle power events in processes with no PowerManager.

content/app/content_main_runner.cc

Index: content/app/content_main_runner.cc
diff --git a/content/app/content_main_runner.cc b/content/app/content_main_runner.cc
index 949514af670ff0cda6aca3e0c860f9dacc3be395..da27afaaf017aa36d9ca79c77b98cbf032ac72f3 100644
--- a/content/app/content_main_runner.cc
+++ b/content/app/content_main_runner.cc
@@ -672,10 +672,6 @@ class ContentMainRunnerImpl : public ContentMainRunner {
     // It's important not to allocate the ports for processes which don't
     // register with the power monitor - see crbug.com/88867.
     if (process_type.empty() ||
-        process_type == switches::kPluginProcess ||
-        process_type == switches::kRendererProcess ||
-        process_type == switches::kUtilityProcess ||
-        process_type == switches::kWorkerProcess ||
         (delegate &&
          delegate->ProcessRegistersWithSystemProcess(process_type))) {
       base::PowerMonitorDeviceSource::AllocateSystemIOPorts();