gn docs generator: Don't get confused by ansi escape codes.

tools/gn/bin/help_as_html.py

Index: tools/gn/bin/help_as_html.py
diff --git a/tools/gn/bin/help_as_html.py b/tools/gn/bin/help_as_html.py
index f8f1c1bc271cf80fb5427c71db1c22286bd9edaf..9dfea3175628681f32087e382955db4b45bb4539 100755
--- a/tools/gn/bin/help_as_html.py
+++ b/tools/gn/bin/help_as_html.py
@@ -12,13 +12,17 @@
 # - Spit out other similar formats like wiki, markdown, whatever.
 
 import cgi
+import re
 import subprocess
 import sys
 
 
 def GetOutput(*args):
   try:
-    return subprocess.check_output([sys.argv[1]] + list(args))
+    # TODO: Remove ansi escape code stripping if crbug.com/362239 gets fixed.
+    ansi_escape = re.compile(r'\x1b[^m]*m')
+    return ansi_escape.sub(
+        '', subprocess.check_output([sys.argv[1]] + list(args)))
   except subprocess.CalledProcessError:
     return ''