Update licensecheck to version 2.12.4.

tools/checklicenses/checklicenses.py

Index: tools/checklicenses/checklicenses.py
diff --git a/tools/checklicenses/checklicenses.py b/tools/checklicenses/checklicenses.py
index 480ef71a86c0083e9699dac2b0bb894b7744b69d..c51b0780baee19bdbc00c15d6b67ba57a8d47b61 100755
--- a/tools/checklicenses/checklicenses.py
+++ b/tools/checklicenses/checklicenses.py
@@ -50,8 +50,6 @@ WHITELISTED_LICENSES = [
     'BSD-like MIT/X11 (BSD like)',
 
     'BSL (v1.0)',
-    # TODO(phajdan.jr): Make licensecheck not print the comma after 3.1.
-    'BSL (v1.0) GPL (v3.1,)',
     'GPL (v2 or later) with Bison parser exception',
     'GPL (v2 or later) with libtool exception',
     'GPL (v3 or later) with Bison parser exception',
@@ -80,6 +78,10 @@ WHITELISTED_LICENSES = [
     'MIT/X11 (BSD like)',
     'Ms-PL',
     'Public domain',
+    'Public domain BSD',
+    'Public domain BSD (3 clause)',
+    'Public domain BSD-like',
+    'Public domain LGPL (v2.1 or later)',
     'libpng',
     'zlib/libpng',
     'SGI Free Software License B',
@@ -131,18 +133,12 @@ PATH_SPECIFIC_WHITELISTED_LICENSES = {
         'BSD (2 clause) GPL (v2 or later)',
         'BSD (3 clause) GPL (v2 or later)',
         'BSL (v1.0) GPL',
+        'BSL (v1.0) GPL (v3.1)',
         'GPL',
         'GPL (unversioned/unknown version)',
         'GPL (v2)',
-
-        # TODO(phajdan.jr): Make licensecheck not print the comma after v2.
-        'GPL (v2,)',
-
         'GPL (v2 or later)',
-
-        # TODO(phajdan.jr): Make licensecheck not print the comma after 3.1.
-        'GPL (v3.1,)',
-
+        'GPL (v3.1)',
         'GPL (v3 or later)',
     ],
     'net/tools/spdyshark': [
@@ -226,6 +222,9 @@ PATH_SPECIFIC_WHITELISTED_LICENSES = {
     'third_party/hunspell': [  # http://crbug.com/98134
         'UNKNOWN',
     ],
+    'third_party/hyphen/hyphen.tex': [ # http://crbug.com/157375
+        'UNKNOWN',
+    ],
     'third_party/iccjpeg': [  # http://crbug.com/98137
         'UNKNOWN',
     ],
@@ -315,7 +314,7 @@ PATH_SPECIFIC_WHITELISTED_LICENSES = {
     'third_party/ots/tools/ttf-checksum.py': [  # http://code.google.com/p/ots/issues/detail?id=2
         'UNKNOWN',
     ],
-    'third_party/molokocacao/NSBezierPath+MCAdditions.h': [  # http://crbug.com/98453
+    'third_party/molokocacao': [  # http://crbug.com/98453
         'UNKNOWN',
     ],
     'third_party/npapi/npspy': [