Use FrameIsAd to decide whether to isolate a frame in TopDocumentIsolation mode.

chrome/browser/extensions/chrome_content_browser_client_extensions_part.h

Index: chrome/browser/extensions/chrome_content_browser_client_extensions_part.h
diff --git a/chrome/browser/extensions/chrome_content_browser_client_extensions_part.h b/chrome/browser/extensions/chrome_content_browser_client_extensions_part.h
index c4c8b7826bfeed997caf31dfa04a17a7e1205cb6..a69cf10bcdd0f4eb886f7549c362deba3be4c41d 100644
--- a/chrome/browser/extensions/chrome_content_browser_client_extensions_part.h
+++ b/chrome/browser/extensions/chrome_content_browser_client_extensions_part.h
@@ -5,6 +5,10 @@
 #ifndef CHROME_BROWSER_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_
 #define CHROME_BROWSER_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_
 
+#include <memory>
+#include <string>
+#include <vector>
+
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "chrome/browser/chrome_content_browser_client_parts.h"
@@ -71,9 +75,8 @@ class ChromeContentBrowserClientExtensionsPart
   static std::unique_ptr<content::VpnServiceProxy> GetVpnServiceProxy(
       content::BrowserContext* browser_context);
 
-  static bool ShouldFrameShareParentSiteInstanceDespiteTopDocumentIsolation(
-      const GURL& url,
-      content::SiteInstance* parent_site_instance);
+  static bool IsMainFrameSiteInstanceExcludedFromTopDocumentIsolation(
+      content::SiteInstance* main_frame_site_instance);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ChromeContentBrowserClientExtensionsPartTest,