update example

gyp/experimental.gyp

 # GYP file to build experimental directory.
 {
   'targets': [
     {
       'target_name': 'experimental',
       'type': 'static_library',
       'include_dirs': [
         '../include/config',
         '../include/core',
       ],
@@ skipping 18 matching lines @@
         '../experimental/SkiaExamples/HelloSkiaExample.cpp',
       ],
       'dependencies': [
         'flags.gyp:flags',
         'skia_lib.gyp:skia_lib',
         'views.gyp:views',
       ],
       'conditions' : [
         [ 'skia_gpu == 1', {
           'include_dirs' : [
-            '../src/gpu',
+            '../include/gpu',
           ],
         }],
         [ 'skia_os == "win"', {
           'sources' : [
             '../src/views/win/SkOSWindow_Win.cpp',
             '../src/views/win/skia_win.cpp',
           ],
         }],
         [ 'skia_os == "mac"', {
           'sources': [
@@ skipping 50 matching lines @@
         '../tools/flags',
       ],
       'dependencies': [
         'pdf.gyp:pdf',
         'skia_lib.gyp:skia_lib',
         'tools.gyp:sk_tool_utils',
       ],
     },
   ],
 }