TopSites: filter out non-WebSafe URLs

components/history/core/browser/history_backend_client.h

Index: components/history/core/browser/history_backend_client.h
diff --git a/components/history/core/browser/history_backend_client.h b/components/history/core/browser/history_backend_client.h
index 8327bd26f7371ea825df03ed36936cd85be13d55..512170478d20015dac17c286dacbe8634146f363 100644
--- a/components/history/core/browser/history_backend_client.h
+++ b/components/history/core/browser/history_backend_client.h
@@ -44,6 +44,10 @@ class HistoryBackendClient {
   // Returns whether database errors should be reported to the crash server.
   virtual bool ShouldReportDatabaseError() = 0;
 
+  // Returns whether |url| should be considered web-safe (see
+  // content::ChildProcessSecurityPolicy).
+  virtual bool IsWebSafe(const GURL& url) = 0;
+
 #if defined(OS_ANDROID)
   // Called upon initialization of the HistoryBackend.
   virtual void OnHistoryBackendInitialized(