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 a82e2807e58db31593351b1397b1a46beb9a8221..a42ddc6b4206b169aa9ea7bb821cbe9ab52d655b 100644
--- a/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
+++ b/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h
@@ -144,6 +144,8 @@ 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