[screen-orientation] Update implementation to match recent spec changes.

Source/modules/screen_orientation/PartialScreenOrientation.h

Index: Source/modules/screen_orientation/PartialScreenOrientation.h
diff --git a/Source/modules/screen_orientation/PartialScreenOrientation.h b/Source/modules/screen_orientation/PartialScreenOrientation.h
new file mode 100644
index 0000000000000000000000000000000000000000..490a1ded529dd6579483b91249e77b6922615218
--- /dev/null
+++ b/Source/modules/screen_orientation/PartialScreenOrientation.h
@@ -0,0 +1,37 @@
+// 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.
+
+#ifndef PartialScreenOrientation_h
+#define PartialScreenOrientation_h
+
+#include "core/frame/DOMWindowProperty.h"
+#include "platform/Supplementable.h"
+
+namespace WebCore {
+
+class ScreenOrientation;
+class Screen;
+class ScriptState;
+
+class PartialScreenOrientation FINAL : public NoBaseWillBeGarbageCollectedFinalized<PartialScreenOrientation>, public WillBeHeapSupplement<Screen>, DOMWindowProperty {

[abarth-chromium, 2014/07/07 17:29:33]

PartialScreenOrientation -> ScreenScreenOrientation ?  I guess that reads kind
of odd, but that's the pattern we use to name these supplements...

[mlamouri (slow - plz ping), 2014/07/08 14:07:59]

Done.

+    WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(PartialScreenOrientation);
+public:
+    static PartialScreenOrientation& from(Screen&);
+    virtual ~PartialScreenOrientation();
+
+    static ScreenOrientation* orientation(ScriptState*, Screen&);
+
+    virtual void trace(Visitor*) OVERRIDE;
+
+private:
+    explicit PartialScreenOrientation(Screen&);
+
+    static const char* supplementName();
+
+    PersistentWillBeMember<ScreenOrientation> m_orientation;
+};
+
+} // namespace WebCore
+
+#endif // PartialScreenOrientation_h