cc: Add command line for frame production throttle

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 0b50b6788fd0c7447299ebc92818e68cf7bb2edc..7f14845b4e6c57ee8f4cc4d9f6dd3a7628fce7af 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -224,8 +224,11 @@ void RenderWidgetCompositor::Initialize() {
   // to keep content always crisp when possible.
   settings.layer_transforms_should_scale_layer_contents = true;
 
-  settings.renderer_settings.disable_gpu_vsync =
-      cmd->HasSwitch(switches::kDisableGpuVsync);
+  settings.renderer_settings.disable_display_vsync =
+      (cmd->HasSwitch(switches::kDisableGpuVsync)
+           ? true
+           : !cmd->HasSwitch(cc::switches::kDisableDisplayVsync));

[brianderson, 2015/06/24 01:16:45]

Can this (and elsehwere) be a simple OR:

cmd->HasSwitch(switches::kDisableGpuVsync) ||
cmd->HasSwitch(cc::switches::kDisableDisplayVsync)

?

[Jimmy Jo, 2015/06/24 09:38:31]

I misunderstood. When we turn on kDisableDisplayVsync,  |disable_display_vsync|
should be true. 
Done

+
   settings.main_frame_before_activation_enabled =
       cmd->HasSwitch(cc::switches::kEnableMainFrameBeforeActivation) &&
       !cmd->HasSwitch(cc::switches::kDisableMainFrameBeforeActivation);