Sandbox should prevent 'execCommand("print", ...)'.

third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp

Index: third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
diff --git a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
index 9390336a5cb913f5d558a36ec3be4249edaaac83..5ba9b469a15c86c1539ea5390ec2abd981c4a013 100644
--- a/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
+++ b/third_party/WebKit/Source/core/frame/LocalDOMWindow.cpp
@@ -701,15 +701,6 @@ void LocalDOMWindow::print(ScriptState* scriptState) {
   if (!host)
     return;
 
-  if (document()->isSandboxed(SandboxModals)) {
-    UseCounter::count(document(), UseCounter::DialogInSandboxedContext);
-    frameConsole()->addMessage(ConsoleMessage::create(
-        SecurityMessageSource, ErrorMessageLevel,
-        "Ignored call to 'print()'. The document is sandboxed, and the "
-        "'allow-modals' keyword is not set."));
-    return;
-  }
-
   if (scriptState &&
       v8::MicrotasksScope::IsRunningMicrotasks(scriptState->isolate())) {
     UseCounter::count(document(), UseCounter::During_Microtask_Print);