Optionally run RAW images serially

tools/dm_flags.py

Index: tools/dm_flags.py
diff --git a/tools/dm_flags.py b/tools/dm_flags.py
index 663507ebb9c6b943208de35563bd50d772a96b39..a6b872f079fb41e6cdfe26c2092140c507cec6f4 100755
--- a/tools/dm_flags.py
+++ b/tools/dm_flags.py
@@ -155,13 +155,6 @@ def get_args(bot):
     blacklist.extend([   '2ndpic-8888', 'gm', '_', test])
     blacklist.extend(['serialize-8888', 'gm', '_', test])
 
-  # NexusPlayer runs out of memory running RAW codec tests
-  if 'NexusPlayer' in bot:
-    r = ["arw", "cr2", "dng", "nef", "nrw", "orf", "raf", "rw2", "pef", "srw",
-         "ARW", "CR2", "DNG", "NEF", "NRW", "ORF", "RAF", "RW2", "PEF", "SRW"]
-    for raw_ext in r:
-      blacklist.extend(('_ image _ .%s' % raw_ext).split(' '))
-
   match = []
   if 'Valgrind' in bot: # skia:3021
     match.append('~Threaded')
@@ -199,6 +192,11 @@ def get_args(bot):
     args.append('--match')
     args.extend(match)
 
+  # These bots run out of memory running RAW codec tests. Do not run them in
+  # parallel
+  if 'NexusPlayer' in bot or 'Nexus5' in bot or 'Nexus9' in bot:
+    args.append('--noRAW_threading')
+
   return args
 cov_end = lineno()   # Don't care about code coverage past here.