Add test_skia.py, isolates for test_skia, images, skps

infra/bots/compile_skia.py

 #!/usr/bin/env python
 #
 # Copyright 2016 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 import common
 import sys
 
 
 def main():
   if len(sys.argv) != 3:
-    print >> sys.stderr, 'Usage: compile_skia.py <builder name> <out-dir>'
+    print >> sys.stderr, 'Usage: compile_skia.py <builder name> <swarm out dir>'
     sys.exit(1)
-  bot = common.BotInfo(sys.argv[1], 'fake-slave', sys.argv[2])
-  for t in bot.build_targets:
-    bot.flavor.compile(t)
+  bot = common.BotInfo(sys.argv[1], sys.argv[2])
+  bot.compile_steps()
 
 
 if __name__ == '__main__':
   main()