Improve TDI render process naming in the task manager.

content/browser/site_instance_impl.cc

Index: content/browser/site_instance_impl.cc
diff --git a/content/browser/site_instance_impl.cc b/content/browser/site_instance_impl.cc
index c12a0c79160a24dea7b2667816cb670fc4f89114..7980783a7d3ed0acfe3da00d14a192471abd8e75 100644
--- a/content/browser/site_instance_impl.cc
+++ b/content/browser/site_instance_impl.cc
@@ -239,6 +239,10 @@ bool SiteInstanceImpl::RequiresDedicatedProcess() {
   return DoesSiteRequireDedicatedProcess(GetBrowserContext(), site_);
 }
 
+bool SiteInstanceImpl::IsDefaultSubframeSiteInstance() const {
+  return is_default_subframe_site_instance_;
+}
+
 void SiteInstanceImpl::IncrementActiveFrameCount() {
   active_frame_count_++;
 }