Disable --config pdf temporarily on Valgrind bot.

tools/dm_flags.py

 #!/usr/bin/env python
 
 usage = '''
 Write extra flags to outfile for DM based on the bot name:
   $ python dm_flags.py outfile Test-Mac10.9-MacMini6.2-HD4000-x86_64-Release
 Or run self-tests:
   $ python dm_flags.py test
 '''
 
 import inspect
@@ skipping 14 matching lines @@
   configs = ['565', '8888', 'gpu']
   # The S4 crashes and the NP produces a long error stream when we run with
   # MSAA.
   if ('GalaxyS4'    not in bot and
       'NexusPlayer' not in bot):
     if 'Android' in bot:
       configs.extend(['msaa4', 'nvprmsaa4'])
     else:
       configs.extend(['msaa16', 'nvprmsaa16'])
   # Runs out of memory on Android bots and Daisy.  Everyone else seems fine.
-  if 'Android' not in bot and 'Daisy' not in bot:
+  # Valgrind: PDF + .webp -> jumps depending on uninitialized memory.  skia:3505
+  if 'Android' not in bot and 'Daisy' not in bot and 'Valgrind' not in bot:
     configs.append('pdf')
 
   # Xoom and NP are running out of RAM when we run all these modes.  skia:3255
   if ('Xoom'        not in bot and
       'NexusPlayer' not in bot):
     configs.extend(mode + '-8888' for mode in
                    ['serialize', 'tiles_rt', 'pipe'])
     configs.append('tiles_rt-gpu')
   if 'ANGLE' in bot:
     configs.append('angle')
@@ skipping 79 matching lines @@
   if len(sys.argv) == 2 and sys.argv[1] == 'test':
     self_test()
     sys.exit(0)
 
   if len(sys.argv) != 3:
     print usage
     sys.exit(1)
 
   with open(sys.argv[1], 'w') as out:
     json.dump(get_args(sys.argv[2]), out)