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

chrome/browser/extensions/chrome_content_browser_client_extensions_part.h

 // Copyright 2014 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 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"
 #include "ui/base/page_transition_types.h"
 
 namespace content {
 struct Referrer;
 class ResourceContext;
 class VpnServiceProxy;
 }
@@ skipping 46 matching lines @@
                                  bool* result);
 
   // Helper function to call InfoMap::SetSigninProcess().
   static void SetSigninProcess(content::SiteInstance* site_instance);
 
   // Creates a new VpnServiceProxy. The caller owns the returned value. It's
   // valid to return nullptr.
   static std::unique_ptr<content::VpnServiceProxy> GetVpnServiceProxy(
       content::BrowserContext* browser_context);
 
-  static bool IsMainFrameSiteInstanceExcludedFromTopDocumentIsolation(
-      content::SiteInstance* main_frame_site_instance);
+  static bool ShouldFrameShareParentSiteInstanceDespiteTopDocumentIsolation(
+      const GURL& url,
+      content::SiteInstance* parent_site_instance);
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ChromeContentBrowserClientExtensionsPartTest,
                            ShouldAllowOpenURLMetricsForEmptySiteURL);
   FRIEND_TEST_ALL_PREFIXES(ChromeContentBrowserClientExtensionsPartTest,
                            ShouldAllowOpenURLMetricsForKnownSchemes);
 
   // Specifies reasons why web-accessible resource checks in ShouldAllowOpenURL
   // might fail.
   //
@@ skipping 36 matching lines @@
       Profile* profile) override;
   void ResourceDispatcherHostCreated() override;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClientExtensionsPart);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_CHROME_CONTENT_BROWSER_CLIENT_EXTENSIONS_PART_H_