Add support for 'allow-orientation-lock' sandboxing directive

Source/modules/screen_orientation/ScreenOrientation.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 #include "modules/screen_orientation/ScreenOrientation.h"
 
+#include "bindings/v8/ExceptionState.h"
+#include "core/dom/Document.h"
 #include "core/frame/DOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Screen.h"
 #include "modules/screen_orientation/ScreenOrientationController.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebScreenOrientationType.h"
 
 // This code assumes that WebScreenOrientationType values are included in WebScreenOrientationLockType.
 #define COMPILE_ASSERT_MATCHING_ENUM(enum1, enum2) \
     COMPILE_ASSERT(static_cast<unsigned>(blink::enum1) == static_cast<unsigned>(blink::enum2), mismatching_types)
@@ skipping 114 matching lines @@
 {
     ScreenOrientation& screenOrientation = ScreenOrientation::from(screen);
     if (!screenOrientation.document()) {
         // FIXME: we should try to return a better guess, like the latest known value.
         return orientationTypeToString(blink::WebScreenOrientationPortraitPrimary);
     }
     ScreenOrientationController& controller = ScreenOrientationController::from(*screenOrientation.document());
     return orientationTypeToString(controller.orientation());
 }
 
-bool ScreenOrientation::lockOrientation(Screen& screen, const AtomicString& lockString)
+bool ScreenOrientation::lockOrientation(Screen& screen, const AtomicString& lockString, ExceptionState& exceptionState)
 {
-    ScreenOrientation::from(screen).lockOrientationAsync(stringToOrientationLock(lockString));
+    ScreenOrientation& screenOrientation = ScreenOrientation::from(screen);
+    Document* document = screenOrientation.document();
+    if (!document)
+        return false;
+    if (document->isSandboxed(SandboxOrientationLock)) {
+        exceptionState.throwSecurityError("The document is sandboxed and lacks the 'allow-orientation-lock' flag.");
+        return false;
+    }
+    screenOrientation.lockOrientationAsync(stringToOrientationLock(lockString));
     return true;
 }
 
 void ScreenOrientation::unlockOrientation(Screen& screen)
 {
     ScreenOrientation::from(screen).lockOrientationAsync(blink::WebScreenOrientationLockDefault);
 }
 
 } // namespace WebCore