Whitelisting exts and plugins from cross-site document blocking

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 4eea8a3c12830d31f4dc1f0ff8c75a715c8e34ef..24a45101a6d2810d326d165b3af4f169b6a59a11 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -250,6 +250,11 @@ class CONTENT_EXPORT ContentRendererClient {
   // and can be external or internal.
   virtual bool ShouldReportDetailedMessageForSource(
       const base::string16& source) const;
+
+  // Returns true if we should apply the cross-site document blocking policy to
+  // this renderer process. Currently, we apply the policy only to a renderer
+  // process running on a normal page from the web.
+  virtual bool ShouldEnableSiteIsolationPolicy() const;
 };
 
 }  // namespace content