Replace FINAL and OVERRIDE with their C++11 counterparts in Source/core/[css|rendering|clipboard]

Source/core/css/MediaQueryMatcher.h

Index: Source/core/css/MediaQueryMatcher.h
diff --git a/Source/core/css/MediaQueryMatcher.h b/Source/core/css/MediaQueryMatcher.h
index b8cadebc3243e555ae6c2f5bb5bca8ab89a41b9a..b13b6061821ccbde3945bc35924468cc1aa10fe7 100644
--- a/Source/core/css/MediaQueryMatcher.h
+++ b/Source/core/css/MediaQueryMatcher.h
@@ -37,7 +37,7 @@ class MediaQuerySet;
 // whenever it is needed and to call the listeners if the corresponding query has changed.
 // The listeners must be called in the very same order in which they have been added.
 
-class MediaQueryMatcher FINAL : public RefCountedWillBeGarbageCollectedFinalized<MediaQueryMatcher> {
+class MediaQueryMatcher final : public RefCountedWillBeGarbageCollectedFinalized<MediaQueryMatcher> {
     DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(MediaQueryMatcher)
 public:
     static PassRefPtrWillBeRawPtr<MediaQueryMatcher> create(Document&);