Gracefully handle screen.orientation access over unsupported frames.

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/core/v8/ScriptPromise.h"
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMException.h"
@@ skipping 70 matching lines @@
 
     ASSERT_NOT_REACHED();
     return WebScreenOrientationLockDefault;
 }
 
 // static
 ScreenOrientation* ScreenOrientation::create(LocalFrame* frame)
 {
     ASSERT(frame);
 
+    // Check if the ScreenOrientationController is supported for the
+    // frame. It will not be for all LocalFrames, or the frame may
+    // have been detached.
+    if (!ScreenOrientationController::from(*frame))
+        return nullptr;
+
     ScreenOrientation* orientation = new ScreenOrientation(frame);
     ASSERT(orientation->controller());
     // FIXME: ideally, we would like to provide the ScreenOrientationController
     // the case where it is not defined but for the moment, it is eagerly
     // created when the LocalFrame is created so we shouldn't be in that
     // situation.
     // In order to create the ScreenOrientationController lazily, we would need
     // to be able to access WebFrameClient from modules/.
 
     orientation->controller()->setOrientation(orientation);
@@ skipping 82 matching lines @@
     return ScreenOrientationController::from(*m_frame);
 }
 
 DEFINE_TRACE(ScreenOrientation)
 {
     RefCountedGarbageCollectedEventTargetWithInlineData<ScreenOrientation>::trace(visitor);
     DOMWindowProperty::trace(visitor);
 }
 
 } // namespace blink