add dumpops.lua as a sample scraper that just dumps the arguments

add SkLua.h for common utilities

BUG=
R=rmistry@google.com

Review URL: https://codereview.chromium.org/15737010

git-svn-id: http://skia.googlecode.com/svn/trunk@9242 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/tools.gyp b/gyp/tools.gyp
index 1fe564e..7e0a03b 100644
--- a/gyp/tools.gyp
+++ b/gyp/tools.gyp
@@ -100,6 +100,7 @@
       'sources': [
         '../tools/lua/lua_pictures.cpp',
         '../src/utils/SkLuaCanvas.cpp',
+        '../src/utils/SkLua.cpp',
       ],
       'dependencies': [
         'skia_base_libs.gyp:skia_base_libs',