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

chrome/browser/chrome_content_browser_client.h

Index: chrome/browser/chrome_content_browser_client.h
diff --git a/chrome/browser/chrome_content_browser_client.h b/chrome/browser/chrome_content_browser_client.h
index dc4aba0264917f7d1857aa9648e31608633eae4a..2b507c6d24008fb20c137785c936cf6f8c08b08c 100644
--- a/chrome/browser/chrome_content_browser_client.h
+++ b/chrome/browser/chrome_content_browser_client.h
@@ -111,9 +111,10 @@ class ChromeContentBrowserClient : public content::ContentBrowserClient {
                                 ui::PageTransition* transition,
                                 bool* is_renderer_initiated,
                                 content::Referrer* referrer) override;
-  bool ShouldFrameShareParentSiteInstanceDespiteTopDocumentIsolation(
-      const GURL& url,
-      content::SiteInstance* parent_site_instance) override;
+  bool ShouldIsolateFrameForTopDocumentIsolation(
+      content::RenderFrameHost* frame,
+      const GURL& dest_url,
+      content::SiteInstance* main_frame_site_instance) override;
   bool IsSuitableHost(content::RenderProcessHost* process_host,
                       const GURL& site_url) override;
   bool MayReuseHost(content::RenderProcessHost* process_host) override;