Move AbstractInlineTextBox to line/ sub-directory.

Source/modules/accessibility/AXInlineTextBox.h

 /*
  * Copyright (C) 2013, 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 11 matching lines @@
  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef AXInlineTextBox_h
 #define AXInlineTextBox_h
 
-#include "core/layout/AbstractInlineTextBox.h"
+#include "core/layout/line/AbstractInlineTextBox.h"
 #include "modules/accessibility/AXObject.h"
 
 namespace blink {
 
 class AXObjectCacheImpl;
 
 class AXInlineTextBox final : public AXObject {
 
 private:
     AXInlineTextBox(PassRefPtr<AbstractInlineTextBox>, AXObjectCacheImpl*);
@@ skipping 17 matching lines @@
 
 private:
     RefPtr<AbstractInlineTextBox> m_inlineTextBox;
 
     virtual bool computeAccessibilityIsIgnored() const override;
 };
 
 } // namespace blink
 
 #endif // AXInlineTextBox_h