cc: Add a flag to layers that returns true if the layer is in RSLL.

cc/trees/layer_tree_impl.cc

Index: cc/trees/layer_tree_impl.cc
diff --git a/cc/trees/layer_tree_impl.cc b/cc/trees/layer_tree_impl.cc
index 1014a3f8c5c16446a1752579be7d0061ceddec97..421d8946eac3385336e7d28dbeda0117c8d07992 100644
--- a/cc/trees/layer_tree_impl.cc
+++ b/cc/trees/layer_tree_impl.cc
@@ -97,7 +97,9 @@ LayerTreeImpl::LayerTreeImpl(LayerTreeHostImpl* layer_tree_host_impl)
       viewport_size_invalid_(false),
       needs_update_draw_properties_(true),
       needs_full_tree_sync_(true),
-      next_activation_forces_redraw_(false) {}
+      next_activation_forces_redraw_(false),
+      calculate_draw_properties_count_(0u) {
+}
 
 LayerTreeImpl::~LayerTreeImpl() {
   // Need to explicitly clear the tree prior to destroying this so that
@@ -457,6 +459,7 @@ void LayerTreeImpl::UpdateDrawProperties() {
         page_scale_layer_ ? page_scale_layer_ : InnerViewportContainerLayer();
     bool can_render_to_separate_surface =
         !output_surface()->ForcedDrawToSoftwareDevice();
+    ++calculate_draw_properties_count_;

[danakj, 2014/05/02 23:45:26]

Make this skip 0 on wraparound please.

[vmpstr, 2014/05/05 18:46:43]

Done.

     LayerTreeHostCommon::CalcDrawPropsImplInputs inputs(
         root_layer(),
         DrawViewportSize(),
@@ -468,7 +471,8 @@ void LayerTreeImpl::UpdateDrawProperties() {
         settings().can_use_lcd_text,
         can_render_to_separate_surface,
         settings().layer_transforms_should_scale_layer_contents,
-        &render_surface_layer_list_);
+        &render_surface_layer_list_,
+        calculate_draw_properties_count_);
     LayerTreeHostCommon::CalculateDrawProperties(&inputs);
   }
 
@@ -490,6 +494,7 @@ void LayerTreeImpl::UpdateDrawProperties() {
          ++it) {
       if (!it.represents_itself())
         continue;
+
       LayerImpl* layer = *it;
 
       layer->UpdateTilePriorities();