Add python based VERSION file generation for sdk bots

tools/bots/dart_sdk.py

 #!/usr/bin/env python
 #
 # Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 # for details. All rights reserved. Use of this source code is governed by a
 # BSD-style license that can be found in the LICENSE file.
 
 import os.path
 import shutil
 import sys
 
@@ skipping 12 matching lines @@
     Run([sys.executable, './tools/build.py', '--mode=release',
          '--arch=ia32,x64', 'create_sdk'])
 
 def BuildAPIDocs():
   with bot.BuildStep('Build API docs'):
     Run([sys.executable, './tools/build.py', '--mode=release',
          '--arch=ia32', 'api_docs'])
     Run([sys.executable, './tools/build.py', '--mode=release',
          '--arch=ia32', 'dartdocgen'])
 
+def CreateUploadVersionFile():
+  file_path = os.path.join(bot_utils.DART_DIR,
+                           utils.GetBuildRoot(BUILD_OS, 'release', 'ia32'),
+                           'VERSION')
+  with open(file_path, 'w') as fd:
+    fd.write(utils.GetVersionFileContent())
+  DartArchiveUploadVersionFile(file_path)
+
+def DartArchiveUploadVersionFile(version_file):
+  namer = bot_utils.GCSNamer(CHANNEL, bot_utils.ReleaseType.RAW)
+  revision = utils.GetSVNRevision()
+  for revision in [revision, 'latest']:
+    destination = namer.version_filepath(revision)
+    DartArchiveFile(version_file, destination, checksum_files=False)
+
 def CreateUploadSDKZips():
   with bot.BuildStep('Create and upload sdk zips'):
     sdk32_path = os.path.join(bot_utils.DART_DIR,
                               utils.GetBuildRoot(BUILD_OS, 'release', 'ia32'),
                               'dart-sdk')
     sdk64_path = os.path.join(bot_utils.DART_DIR,
                               utils.GetBuildRoot(BUILD_OS, 'release', 'x64'),
                               'dart-sdk')
 
     sdk32_zip = os.path.join(bot_utils.DART_DIR,
@@ skipping 124 matching lines @@
                                                       mangled_filename)
     gsutil.upload(local_sha256, remote_path + '.sha256sum', public=True)
 
 def Run(command):
   print "Running %s" % ' '.join(command)
   return bot.RunProcess(command)
 
 if __name__ == '__main__':
   CreateUploadSDK()
   if BUILD_OS == 'linux':
+    CreateUploadVersionFile()
     CreateUploadAPIDocs()