cc: Add command line for frame production throttle

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index d864a02eb51d59b4c57cb60d7272a44edb708e07..df9e3461f95299c08b859f2babcda9ac3d800b1d 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -93,8 +93,14 @@ Compositor::Compositor(gfx::AcceleratedWidget widget,
       context_factory_->DoesCreateTestContexts() ? kTestRefreshRate
                                                  : kDefaultRefreshRate;
   settings.main_frame_before_activation_enabled = false;
-  settings.renderer_settings.disable_gpu_vsync =
-      command_line->HasSwitch(switches::kDisableGpuVsync);
+  if (command_line->HasSwitch(switches::kDisableGpuVsync)) {
+    std::string displayVsyncStr =

[danakj, 2015/07/14 19:43:42]

display_vsync_string

[Jimmy Jo, 2015/07/15 00:47:27]

Done.

+        command_line->GetSwitchValueASCII(switches::kDisableGpuVsync);
+    settings.renderer_settings.disable_display_vsync =

[brianderson, 2015/07/14 01:48:25]

Might be easier to read this way:

if (displayVsyncStr == "gpu") {
  settings.renderer_settings.disable_display_vsync = true;
} else if (displayVsyncStr == "beginframe") {
  settings.wait_for_beginframe_interval = false;
} else {
  settings.renderer_settings.disable_display_vsync = true;
  settings.wait_for_beginframe_interval = false;
}

[Jimmy Jo, 2015/07/15 00:47:27]

Done.

+        (displayVsyncStr == "gpu" || displayVsyncStr.empty());
+    settings.wait_for_beginframe_interval =
+        !(displayVsyncStr == "beginframe" || displayVsyncStr.empty());
+  }
   settings.renderer_settings.partial_swap_enabled =
       !command_line->HasSwitch(cc::switches::kUIDisablePartialSwap);
 #if defined(OS_WIN)