Changed ComputedStyle's EVisibility to be an enum class and fixed naming

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 637 matching lines @@
 WebSize WebLocalFrameImpl::contentsSize() const
 {
     if (FrameView* view = frameView())
         return view->contentsSize();
     return WebSize();
 }
 
 bool WebLocalFrameImpl::hasVisibleContent() const
 {
     if (LayoutPart* layoutObject = frame()->ownerLayoutObject()) {
-        if (layoutObject->style()->visibility() != VISIBLE)
+        if (layoutObject->style()->visibility() != EVisibility::Visible)
             return false;
     }
 
     if (FrameView* view = frameView())
         return view->visibleWidth() > 0 && view->visibleHeight() > 0;
     return false;
 }
 
 WebRect WebLocalFrameImpl::visibleContentRect() const
 {
@@ skipping 1485 matching lines @@
 {
     frame()->loader().forceSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
 void WebLocalFrameImpl::clearActiveFindMatch()
 {
     ensureTextFinder().clearActiveFindMatch();
 }
 
 } // namespace blink