Improve TDI render process naming in the task manager.

content/browser/site_instance_impl.h

Index: content/browser/site_instance_impl.h
diff --git a/content/browser/site_instance_impl.h b/content/browser/site_instance_impl.h
index 1a255ebb848cfd1d0f3a1afa78e0fdbf4dc55897..3b05af89bf16585b084d402b36fe60c7d1f1c578 100644
--- a/content/browser/site_instance_impl.h
+++ b/content/browser/site_instance_impl.h
@@ -49,6 +49,7 @@ class CONTENT_EXPORT SiteInstanceImpl final : public SiteInstance,
   bool IsRelatedSiteInstance(const SiteInstance* instance) override;
   size_t GetRelatedActiveContentsCount() override;
   bool RequiresDedicatedProcess() override;
+  bool IsDefaultSubframeSiteInstance() const override;
 
   // Returns the SiteInstance, related to this one, that should be used
   // for subframes when an oopif is required, but a dedicated process is not.
@@ -100,10 +101,6 @@ class CONTENT_EXPORT SiteInstanceImpl final : public SiteInstance,
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
-  bool is_default_subframe_site_instance() {
-    return is_default_subframe_site_instance_;
-  }
-
   // Sets the global factory used to create new RenderProcessHosts.  It may be
   // NULL, in which case the default RenderProcessHost will be created (this is
   // the behavior if you don't call this function).  The factory must be set