Add "skp" asset

tools/skp/webpages_playback.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Archives or replays webpages and creates SKPs in a Google Storage location.
 
 To archive webpages and store SKP files (archives should be rarely updated):
 
 cd skia
@@ skipping 45 matching lines @@
 import optparse
 import os
 import posixpath
 import shutil
 import subprocess
 import sys
 import tempfile
 import time
 import traceback
 
-sys.path.insert(0, os.getcwd())
+SKIA_DIR = os.path.abspath(os.path.join(
+    os.path.realpath(os.path.dirname(__file__)),
+    os.pardir, os.pardir))
+sys.path.insert(0, SKIA_DIR)
 
 from common.py.utils import gs_utils
 from common.py.utils import shell_utils
 
 ROOT_PLAYBACK_DIR_NAME = 'playback'
 SKPICTURES_DIR_NAME = 'skps'
 
 PARTNERS_GS_BUCKET = 'gs://chrome-partner-telemetry'
 
 # Local archive and SKP directories.
@@ skipping 517 matching lines @@
            '--skia_tools is specified then the debugger is not run.',
       default=False)
   option_parser.add_option(
       '', '--skp_prefix',
       help='Prefix to add to the names of generated SKPs.',
       default=None)
   options, unused_args = option_parser.parse_args()
 
   playback = SkPicturePlayback(options)
   sys.exit(playback.Run())