remove unused view files

gyp/views.gyp

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 # Views is the Skia windowing toolkit.
 # It provides:
 #  * A portable means of creating native windows.
 #  * Events.
 #  * Basic widgets and controls.
 
@@ skipping 19 matching lines @@
         '../include/views/SkApplication.h',
         '../include/views/SkBGViewArtist.h',
         '../include/views/SkEvent.h',
         '../include/views/SkEventSink.h',
         '../include/views/SkKey.h',
         '../include/views/SkOSMenu.h',
         '../include/views/SkOSWindow_Mac.h',
         '../include/views/SkOSWindow_SDL.h',
         '../include/views/SkOSWindow_Unix.h',
         '../include/views/SkOSWindow_Win.h',
-        '../include/views/SkStackViewLayout.h',
         '../include/views/SkSystemEventTypes.h',
         '../include/views/SkTouchGesture.h',
         '../include/views/SkView.h',
         '../include/views/SkViewInflate.h',
         '../include/views/SkWindow.h',
 
         '../src/views/SkBGViewArtist.cpp',
         '../src/views/SkEvent.cpp',
         '../src/views/SkEventSink.cpp',
         '../src/views/SkOSMenu.cpp',
         '../src/views/SkParsePaint.cpp',
-        '../src/views/SkStackViewLayout.cpp',
         '../src/views/SkTagList.cpp',
         '../src/views/SkTagList.h',
         '../src/views/SkTouchGesture.cpp',
         '../src/views/SkView.cpp',
         '../src/views/SkViewInflate.cpp',
         '../src/views/SkViewPriv.cpp',
         '../src/views/SkViewPriv.h',
         '../src/views/SkWindow.cpp',
             
         # Unix
@@ skipping 120 matching lines @@
         'include_dirs': [
           '../include/views',
         ],
       },
       'export_dependent_settings': [
         'xml.gyp:xml',
       ],
     },
   ],
 }