Disable low res tilings on desktop.

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 1fef5fd69b67e62999b5b7a1047748d2766d3b13..d264aaa99dd8420654598270af2c32a847ce9e79 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -229,7 +229,6 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
         render_thread->is_gpu_rasterization_forced();
     settings.gpu_rasterization_enabled =
         render_thread->is_gpu_rasterization_enabled();
-    settings.create_low_res_tiling = render_thread->is_low_res_tiling_enabled();
     settings.can_use_lcd_text = render_thread->is_lcd_text_enabled();
     settings.use_distance_field_text =
         render_thread->is_distance_field_text_enabled();
@@ -392,6 +391,9 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
   settings.should_clear_root_render_pass =
       !synchronous_compositor_factory;
 
+  // TODO(danakj): Only do this on low end devices.
+  settings.create_low_res_tiling = true;
+
 #elif !defined(OS_MACOSX)
   if (ui::IsOverlayScrollbarEnabled()) {
     settings.scrollbar_animator = cc::LayerTreeSettings::Thinning;
@@ -407,6 +409,11 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
   settings.scrollbar_fade_duration_ms = 300;
 #endif
 
+  if (cmd->HasSwitch(switches::kEnableLowResTiling))
+    settings.create_low_res_tiling = true;
+  if (cmd->HasSwitch(switches::kDisableLowResTiling))
+    settings.create_low_res_tiling = false;
+
   compositor->Initialize(settings);
 
   return compositor.Pass();