Block renderer-initiated main frame navigations to data URLs

third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h

Index: third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
diff --git a/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h b/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
index d346c9fb4489bda827eeaa9a565c6ddcb520dfbf..e751f9a8ed91a6c1188fe459be16a24d11b2f459 100644
--- a/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
+++ b/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
@@ -133,6 +133,8 @@ class PLATFORM_EXPORT SecurityOrigin : public RefCounted<SecurityOrigin> {
   // display content from the user's files system.
   bool CanDisplay(const KURL&) const;
 
+  bool CanNavigateInTopFrame(const KURL&) const;
+
   // Returns true if the origin loads resources either from the local
   // machine or over the network from a
   // cryptographically-authenticated origin, as described in