[prebuilts] Roll gn to e949f834

09171294 [output_conversion] Add output_conversion options
c2717deb [compdb] Properly escape for JSON
f4facf42 Don't allow ./ before target name.
499868c6 port gn to aix
387e3ab4 Add an OWNERS file.

Change-Id: I3658f362c0fd355b87db4eb8e28cbd7bccc3455f
diff --git a/fuchsia.ensure b/fuchsia.ensure
index 12c7ebd..2a38551 100644
--- a/fuchsia.ensure
+++ b/fuchsia.ensure
@@ -8,7 +8,7 @@
 $ParanoidMode CheckPresence
 
 # GN
-gn/gn/${platform} git_revision:11e09914b1a4cd7b6f902e2f76798c47e9312e8e
+gn/gn/${platform} git_revision:091712940324bb8cfb48340e00785118ee88141a
 
 # vpython
 infra/tools/luci/vpython/${platform} git_revision:b6cdec8586c9f8d3d728b1bc0bd4331330ba66fc