mechanical rename of base::debug -> base::trace_event for /cc

cc/layers/layer_impl.cc

Index: cc/layers/layer_impl.cc
diff --git a/cc/layers/layer_impl.cc b/cc/layers/layer_impl.cc
index eae36859f35be17e6919cc056b5c2e9123d3b9cd..f74228bdacf694cca1ac36e0c2503da2ba4fc510 100644
--- a/cc/layers/layer_impl.cc
+++ b/cc/layers/layer_impl.cc
@@ -175,7 +175,7 @@ void LayerImpl::SetScrollParent(LayerImpl* parent) {
 }
 
 void LayerImpl::SetDebugInfo(
-    scoped_refptr<base::debug::ConvertableToTraceFormat> other) {
+    scoped_refptr<base::trace_event::ConvertableToTraceFormat> other) {
   debug_info_ = other;
   SetNeedsPushProperties();
 }
@@ -1401,7 +1401,7 @@ void LayerImpl::RemoveDependentNeedsPushProperties() {
 void LayerImpl::GetAllTilesForTracing(std::set<const Tile*>* tiles) const {
 }
 
-void LayerImpl::AsValueInto(base::debug::TracedValue* state) const {
+void LayerImpl::AsValueInto(base::trace_event::TracedValue* state) const {
   TracedValue::MakeDictIntoImplicitSnapshotWithCategory(
       TRACE_DISABLED_BY_DEFAULT("cc.debug"),
       state,