cc: Trigger GPU rasterization based on a per-layer hint

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 8eeeb9944bb852d4586b9b79f0491bd8120e7cd5..7fb4fc2fe6ad5956bb7ca282c6f9dd71974cabe4 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -127,9 +127,13 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
                                            max_untiled_layer_height);
 
   settings.impl_side_painting = cc::switches::IsImplSidePaintingEnabled();
-  settings.gpu_rasterization =
-      cc::switches::IsGpuRasterizationEnabled() ||
-      cmd->HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths);
+  if (cc::switches::IsGpuRasterizationEnabled() ||
+      cmd->HasSwitch(switches::kEnableBleedingEdgeRenderingFastPaths))

[ernstm, 2014/03/06 22:57:51]

--enable-bleeding-edge-rendering-fast-paths should enable hybrid rasterization
not gpu rasterization.

+    settings.rasterization_site = cc::LayerTreeSettings::GpuRasterization;
+  else if (cc::switches::IsHybridRasterizationEnabled())
+    settings.rasterization_site = cc::LayerTreeSettings::HybridRasterization;
+  else
+    settings.rasterization_site = cc::LayerTreeSettings::CpuRasterization;
 
   settings.calculate_top_controls_position =
       cmd->HasSwitch(cc::switches::kEnableTopControlsPositionCalculation);