Move WGL header from include to src

gyp/tools.gyp

 # GYP file to build various tools.
 #
 # To build on Linux:
 #  ./gyp_skia tools.gyp && make tools
 #
 {
   'includes': [
     'apptype_console.gypi',
   ],
   'targets': [
@@ skipping 638 matching lines @@
         ],
         'paths_to_ignore': [
           '<(skia_include_path)/gpu/gl/GrGLConfig_chrome.h',
           '<(skia_include_path)/ports/SkTypeface_mac.h',
           '<(skia_include_path)/ports/SkTypeface_win.h',
           '<(skia_include_path)/utils/ios',
           '<(skia_include_path)/utils/mac',
           '<(skia_include_path)/utils/win',
           '<(skia_include_path)/utils/SkDebugUtils.h',
           '<(skia_include_path)/utils/SkJSONCPP.h',
-          '<(skia_include_path)/utils/SkWGL.h',
           '<(skia_include_path)/views/animated',
           '<(skia_include_path)/views/SkOSWindow_Android.h',
           '<(skia_include_path)/views/SkOSWindow_iOS.h',
           '<(skia_include_path)/views/SkOSWindow_Mac.h',
           '<(skia_include_path)/views/SkOSWindow_NaCl.h',
           '<(skia_include_path)/views/SkOSWindow_SDL.h',
           '<(skia_include_path)/views/SkOSWindow_Unix.h',
           '<(skia_include_path)/views/SkOSWindow_Win.h',
           '<(skia_include_path)/views/SkWindow.h',
         ],
@@ skipping 108 matching lines @@
               'flags.gyp:flags',
               'skia_lib.gyp:skia_lib',
               'resources',
             ],
           },
         ],
       },
     ],
   ],
 }