Enable tcmalloc on Valgrind bots....

scripts/master/factory/chromium_factory.py

 #!/usr/bin/python
 # Copyright (c) 2006-2009 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.
 
 """Utility class to build the chromium master BuildFactory's.
 
 Based on gclient_factory.py and adds chromium-specific steps."""
 
 from buildbot.steps import trigger
@@ skipping 20 matching lines @@
     'no_gc_sections=1 '
     'debug_extra_cflags="-g -fno-inline -fno-omit-frame-pointer -fno-builtin" '
     'release_extra_cflags="-g -fno-inline -fno-omit-frame-pointer '
                           '-fno-builtin" '
 
     # MSVS flags
     'win_debug_Optimization=1 '
     'win_debug_RuntimeChecks=0 '
     'win_debug_InlineFunctionExpansion=0 '
 
-    'linux_use_tcmalloc=0 '
+    'linux_use_tcmalloc=1 '
     'release_valgrind_build=1 '
     'werror= '
   )
 
   # gclient custom vars
   CUSTOM_VARS_WEBKIT_MIRROR = ('webkit_trunk', config.Master.webkit_trunk_url)
   CUSTOM_VARS_WEBKIT_LATEST = [('webkit_trunk', config.Master.webkit_trunk_url),
                                ('webkit_revision','')]
   # safe sync urls
   SAFESYNC_URL_CHROMIUM = 'http://chromium-status.appspot.com/lkgr'
@@ skipping 384 matching lines @@
   def CEFFactory(self, identifier, target='Release', clobber=False,
                  tests=None, mode=None, slave_type='BuilderTester',
                  options=None, compile_timeout=1200, build_url=None,
                  project=None, factory_properties=None):
     self._solutions.append(gclient_factory.GClientSolution(
         'http://chromiumembedded.googlecode.com/svn/trunk',
         'src/cef'))
     return self.ChromiumFactory(identifier, target, clobber, tests, mode,
                                 slave_type, options, compile_timeout,
                                 build_url, project, factory_properties)