PlzNavigate: add initial traces for new TBM benchmarks.

content/browser/frame_host/render_frame_host_manager.cc

Index: content/browser/frame_host/render_frame_host_manager.cc
diff --git a/content/browser/frame_host/render_frame_host_manager.cc b/content/browser/frame_host/render_frame_host_manager.cc
index 835922622d748095c9df1ef48d695d5525742a5e..b1265924f764e87b78840ca08ca9a177c28a0fe7 100644
--- a/content/browser/frame_host/render_frame_host_manager.cc
+++ b/content/browser/frame_host/render_frame_host_manager.cc
@@ -377,7 +377,7 @@ RenderFrameHostImpl* RenderFrameHostManager::Navigate(
     const GURL& dest_url,
     const FrameNavigationEntry& frame_entry,
     const NavigationEntryImpl& entry) {
-  TRACE_EVENT1("navigation", "RenderFrameHostManager:Navigate",
+  TRACE_EVENT1("navigation", "RenderFrameHostManager::Navigate",
                "FrameTreeNode id", frame_tree_node_->frame_tree_node_id());
   // Create a pending RenderFrameHost to use for the navigation.
   RenderFrameHostImpl* dest_render_frame_host = UpdateStateForNavigate(