| Index: Source/core/dom/SandboxFlags.h | 
| diff --git a/Source/core/dom/SandboxFlags.h b/Source/core/dom/SandboxFlags.h | 
| index 0047981c4cc7a9140051181f0d48951afa1c2d83..fcffa4067f143318377086e970ed8ddc7486543e 100644 | 
| --- a/Source/core/dom/SandboxFlags.h | 
| +++ b/Source/core/dom/SandboxFlags.h | 
| @@ -47,6 +47,7 @@ enum SandboxFlag { | 
| SandboxDocumentDomain = 1 << 9, | 
| SandboxOrientationLock = 1 << 10, // See https://w3c.github.io/screen-orientation/#dfn-sandboxed-orientation-lock-browsing-context-flag. | 
| SandboxPropagatesToAuxiliaryBrowsingContexts = 1 << 11, | 
| +    SandboxModals = 1 << 12, | 
| SandboxAll = -1 // Mask with all bits set to 1. | 
| }; | 
|  | 
|  |