Remove all code related to NaCl

gyp/gpu.gyp

Index: gyp/gpu.gyp
diff --git a/gyp/gpu.gyp b/gyp/gpu.gyp
index 8e4cb070b295da5e2db9ad5056f6c236c175bb32..7d3dad54636166ea3de9062504ef1b4a9d1a9c74 100644
--- a/gyp/gpu.gyp
+++ b/gyp/gpu.gyp
@@ -26,11 +26,7 @@
         'sources/': [ ['exclude', '_android.(h|cpp)$'],
         ],
       }],
-      ['skia_os != "nacl"', {
-        'sources/': [ ['exclude', '_nacl.(h|cpp)$'],
-        ],
-      }],
-      ['skia_os == "nacl" or skia_egl == 0', {
+      ['skia_egl == 0', {
         'sources/': [ ['exclude', '_egl.(h|cpp)$'],
         ],
       }],
@@ -170,13 +166,6 @@
             ],
           },
         }],
-        [ 'skia_os == "nacl"', {
-          'link_settings': {
-            'libraries': [
-              '-lppapi_gles2',
-            ],
-          },
-        }],
         [ 'skia_egl == 1', {
           'defines': [
             'SK_EGL=1',