[chrome-devtools-frontend] Migrate to cloudstorage client

gae/pre_cacher.py

 # Copyright (c) 2013 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.
 
 from google.appengine.api import urlfetch
 import webapp2
 
 import cache
+import cloudstorage
 import config
+import content_type
+from urlparse import urlparse
 
 class PreCacherFromUrl(webapp2.RequestHandler):
   #
-  # For local testing (since /gs paths are not available), precache the
-  # meta-file (e.g. for revision 155046) from your browser:
+  # For local testing, put the revision file and the zip archive
+  # into the local GS server from your browser (e.g. for revision 155046):
   #
-  # http://localhost:8080/precache_url?path=revs/@155046&url=http://commondatastorage.googleapis.com/chrome-devtools-frontend/revs/@155046
+  # http://localhost:8080/precache_url?url=http://commondatastorage.googleapis.com/chrome-devtools-frontend/revs/@155046
   #
   # Then pre-cache the archive (you need to look up MD5 from the meta-file from the 'revs' metafile):
   #
-  # http://localhost:8080/precache_url?path=zips/e4eb112917d276dac7b43affa30422143f37fd26.zip&url=http://commondatastorage.googleapis.com/chrome-devtools-frontend/zips/e4eb112917d276dac7b43affa30422143f37fd26.zip
+  # http://localhost:8080/precache_url?url=http://commondatastorage.googleapis.com/chrome-devtools-frontend/zips/e4eb112917d276dac7b43affa30422143f37fd26.zip
   #
   # Then this works: http://localhost:8080/serve_rev/@155046/devtools.html
   #
-  # Remember to re-populate the cache after the server restarts (e.g. after
-  # changing source files).
-  #
   def get(self):
     if config.IS_DEV_APP_SERVER:
-      path = self.request.GET['path']
       url = self.request.GET['url']
       self.response.headers['Content-Type'] = 'text/plain'
-      self.response.write(precache_url(path, url))
+      self.response.write(precache_url(url))
     else:
       self.abort(403)
 
-def precache_url(file_name, url):
+def precache_url(url):
   result = urlfetch.fetch(url)
+  file_name = urlparse(url).path
   if result.status_code == 200:
-    cache.set_content(file_name, result.content)
-    return 'Cached %s as %s' % (url, file_name)
+    gcs_file = cloudstorage.open(file_name,
+                                 'w',
+                                 content_type=content_type.from_path(file_name))
+    gcs_file.write(result.content)
+    gcs_file.close()
+    return 'Saved %s as %s' % (url, file_name)
   else:
     return 'Error: %d for %s' % (result.status_code, url)