V8: switch more linux bots to mb

scripts/slave/recipe_modules/v8/api.py

 # Copyright 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.
 
 import argparse
 import datetime
 import difflib
 import random
 import re
 import urllib
@@ skipping 398 matching lines @@
           self.upload_isolated_json()
 
   def _compare_gyp_defines(self, mb_output):
     """Compare infra gyp flags with client gyp flags.
 
     Returns the difference as a list of strings or an empty list if there is
     none.
     """
 
     def gyp_defines_to_dict(gyp_defines):
-      return dict(tuple(x.split('=', 1)) for x in gyp_defines.split())
+      # Example input: "foo=1 bar='buz bing'". We assume there's no '=' in the
+      # value part.
+      result = []
+      for x in gyp_defines.split():
+        kv = x.split('=', 1)
+        if len(kv) == 1:
+          # No '=' in x. It's part of a quoted string containing a space.
+          # Append it to the last value.
+          result[-1][1] += (' ' + kv[0])
+        else:
+          result.append(kv)
+      return dict(tuple(kv) for kv in result)
 
     infra_flags = gyp_defines_to_dict(
         self.m.chromium.c.gyp_env.as_jsonish()['GYP_DEFINES'])
 
     # Get the client's gyp flags from MB's output.
     match = re.search('^GYP_DEFINES=\'(.*)\'$', mb_output, re.M)
 
     # This won't match in the gn case.
     if match:
       client_flags = gyp_defines_to_dict(match.group(1))
@@ skipping 814 matching lines @@
   def report_culprits(self, culprit_range):
     assert culprit_range
     if len(culprit_range) > 1:
       text = 'Suspecting multiple commits'
     else:
       text = 'Suspecting %s' % culprit_range[0][:8]
 
     step_result = self.m.step(text, cmd=None)
     for culprit in culprit_range:
       step_result.presentation.links[culprit[:8]] = COMMIT_TEMPLATE % culprit