Make disable vsync run the renderer independently

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index 540c9d7070be99f76c706f768567468ba43a7a77..51f2e765d87f5697ade607ad06b0990d5e038ee5 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -110,14 +110,8 @@ Compositor::Compositor(ui::ContextFactory* context_factory,
   if (command_line->HasSwitch(switches::kDisableGpuVsync)) {
     std::string display_vsync_string =
         command_line->GetSwitchValueASCII(switches::kDisableGpuVsync);
-    if (display_vsync_string == "gpu") {
+    if (display_vsync_string != "beginframe")

[danakj, 2016/09/12 22:18:00]

Don't you mean != "gpu"?

If "beginframe" then we want to disable vsync here, no?

[danakj, 2016/09/12 22:24:26]

Can you put a comment here explaining that this is taking the same behaviour as
the Display etc? So it only unthrottles if "gpu" should be unthrottled which
actually means Display. And we do that because Display is in process and if it
was not then we should change this to be be unthrottled when "beginframe" is
unthrottled instead?

       settings.renderer_settings.disable_display_vsync = true;
-    } else if (display_vsync_string == "beginframe") {
-      settings.wait_for_beginframe_interval = false;
-    } else {
-      settings.renderer_settings.disable_display_vsync = true;
-      settings.wait_for_beginframe_interval = false;
-    }
   }
   settings.renderer_settings.partial_swap_enabled =
       !command_line->HasSwitch(switches::kUIDisablePartialSwap);