Improve TDI render process naming in the task manager.

content/public/browser/site_instance.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_
 #define CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 112 matching lines @@
   virtual bool IsRelatedSiteInstance(const SiteInstance* instance) = 0;
 
   // Returns the total active WebContents count for this SiteInstance and all
   // related SiteInstances in the same BrowsingInstance.
   virtual size_t GetRelatedActiveContentsCount() = 0;
 
   // Returns true if this SiteInstance is for a site that requires a dedicated
   // process. This only returns true under the "site per process" process model.
   virtual bool RequiresDedicatedProcess() = 0;
 
+  // Returns true if this SiteInstance is used as the default SiteInstance for
+  // cross-site subframes. This only returns true if "top document isolation" is
+  // used.
+  virtual bool IsDefaultSubframeSiteInstance() const = 0;
+
   // Factory method to create a new SiteInstance.  This will create a new
   // new BrowsingInstance, so it should only be used when creating a new tab
   // from scratch (or similar circumstances).
   //
   // The render process host factory may be nullptr.  See SiteInstance
   // constructor.
   static scoped_refptr<SiteInstance> Create(
       content::BrowserContext* browser_context);
 
   // Factory method to get the appropriate SiteInstance for the given URL, in
@@ skipping 24 matching lines @@
  protected:
   friend class base::RefCounted<SiteInstance>;
 
   SiteInstance() {}
   virtual ~SiteInstance() {}
 };
 
 }  // namespace content.
 
 #endif  // CONTENT_PUBLIC_BROWSER_SITE_INSTANCE_H_