cc: Move more traces to be disabled-by-default around tile management.

cc/tiles/tile_manager.cc

Index: cc/tiles/tile_manager.cc
diff --git a/cc/tiles/tile_manager.cc b/cc/tiles/tile_manager.cc
index ca40d23467916a1277d2a253929b02a80dc2baa4..63e9968ebfc8ba039bd5dfec86710360f4c7f08e 100644
--- a/cc/tiles/tile_manager.cc
+++ b/cc/tiles/tile_manager.cc
@@ -979,7 +979,7 @@ void TileManager::CheckAndIssueSignals() {
   if (signals_.ready_to_activate && !signals_.did_notify_ready_to_activate) {
     signals_.ready_to_activate = false;
     if (IsReadyToActivate()) {
-      TRACE_EVENT0("cc",
+      TRACE_EVENT0("disabled-by-default-cc.debug",
                    "TileManager::CheckAndIssueSignals - ready to activate");
       signals_.did_notify_ready_to_activate = true;
       client_->NotifyReadyToActivate();
@@ -990,7 +990,8 @@ void TileManager::CheckAndIssueSignals() {
   if (signals_.ready_to_draw && !signals_.did_notify_ready_to_draw) {
     signals_.ready_to_draw = false;
     if (IsReadyToDraw()) {
-      TRACE_EVENT0("cc", "TileManager::CheckAndIssueSignals - ready to draw");
+      TRACE_EVENT0("disabled-by-default-cc.debug",
+                   "TileManager::CheckAndIssueSignals - ready to draw");
       signals_.did_notify_ready_to_draw = true;
       client_->NotifyReadyToDraw();
     }
@@ -1002,7 +1003,8 @@ void TileManager::CheckAndIssueSignals() {
     signals_.all_tile_tasks_completed = false;
     if (!has_scheduled_tile_tasks_) {
       TRACE_EVENT0(
-          "cc", "TileManager::CheckAndIssueSignals - all tile tasks completed");
+          "disabled-by-default-cc.debug",
+          "TileManager::CheckAndIssueSignals - all tile tasks completed");
       signals_.did_notify_all_tile_tasks_completed = true;
       client_->NotifyAllTileTasksCompleted();
     }