Update skia and ui GN builds

ppapi/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("ppapi_sources.gypi") ],
     "scope",
     [ "ppapi_sources.gypi" ])
 
@@ skipping 50 matching lines @@
     "lib/gl/gles2/gles2.c",
   ]
 
   include_dirs = [ "lib/gl/include" ]
 
   deps = [
     ":ppapi_c",
   ]
 }
 
-# TODO(GYP) bug 377890, re-enable this when it links.
+# TODO(brettw) argument list is too long. Need to add response files.
 #shared_library("ppapi_tests") {
 #  sources = gypi_values.test_common_source_files +
 #            gypi_values.test_trusted_source_files
 #
 #  defines = [ "GL_GLEXT_PROTOTYPES" ]
 #  include_dirs = [ "lib/gl/include" ]
 #
 #  deps = [
 #    ":ppapi_cpp",
 #    ":ppapi_shared",
@@ skipping 634 matching lines @@
     "//ui/surface",
     #blink_target,  TODO(GYP)
   ]
 
   if (is_win) {
     cflags = [ "/wd4267" ]  # size_t to int truncation.
   }
 }
 
 # TODO(GYP) other targets from ppapi_tests.gyp