cc: Remove support for disabling non-root render surfaces.

cc/trees/clip_node.cc

Index: cc/trees/clip_node.cc
diff --git a/cc/trees/clip_node.cc b/cc/trees/clip_node.cc
index d3c1863d4482247acccae0ab4e2fc76a680e262d..33aefc604ae0e62ba36a4f5149f93e8606f283b2 100644
--- a/cc/trees/clip_node.cc
+++ b/cc/trees/clip_node.cc
@@ -21,7 +21,6 @@ ClipNode::ClipNode()
       target_effect_id(EffectTree::kInvalidNodeId),
       layer_clipping_uses_only_local_clip(false),
       layers_are_clipped(false),
-      layers_are_clipped_when_surfaces_disabled(false),
       resets_clip(false) {}
 
 ClipNode::ClipNode(const ClipNode& other)
@@ -38,8 +37,6 @@ ClipNode::ClipNode(const ClipNode& other)
       layer_clipping_uses_only_local_clip(
           other.layer_clipping_uses_only_local_clip),
       layers_are_clipped(other.layers_are_clipped),
-      layers_are_clipped_when_surfaces_disabled(
-          other.layers_are_clipped_when_surfaces_disabled),
       resets_clip(other.resets_clip) {
   if (other.clip_expander) {
     DCHECK_EQ(clip_type, ClipType::EXPANDS_CLIP);
@@ -61,8 +58,6 @@ ClipNode& ClipNode::operator=(const ClipNode& other) {
   layer_clipping_uses_only_local_clip =
       other.layer_clipping_uses_only_local_clip;
   layers_are_clipped = other.layers_are_clipped;
-  layers_are_clipped_when_surfaces_disabled =
-      other.layers_are_clipped_when_surfaces_disabled;
   resets_clip = other.resets_clip;
 
   if (other.clip_expander) {
@@ -95,8 +90,6 @@ bool ClipNode::operator==(const ClipNode& other) const {
          layer_clipping_uses_only_local_clip ==
              other.layer_clipping_uses_only_local_clip &&
          layers_are_clipped == other.layers_are_clipped &&
-         layers_are_clipped_when_surfaces_disabled ==
-             other.layers_are_clipped_when_surfaces_disabled &&
          resets_clip == other.resets_clip;
 }
 
@@ -112,8 +105,6 @@ void ClipNode::AsValueInto(base::trace_event::TracedValue* value) const {
   value->SetBoolean("layer_clipping_uses_only_local_clip",
                     layer_clipping_uses_only_local_clip);
   value->SetBoolean("layers_are_clipped", layers_are_clipped);
-  value->SetBoolean("layers_are_clipped_when_surfaces_disabled",
-                    layers_are_clipped_when_surfaces_disabled);
   value->SetBoolean("resets_clip", resets_clip);
 }