Bug 1529002 - Update cbindgen. r=boris

We need this to auto-generate the copy-constructor for TransformOperation,
without which the patch wouldn't build.

Differential Revision: https://phabricator.services.mozilla.com/D30799

build/moz.configure/bindgen.configure

@@ -15,7 +15,7 @@ option(env='CBINDGEN', nargs=1, when=cbindgen_is_needed,
 def check_cbindgen_version(cbindgen, fatal=False):
     log.debug("trying cbindgen: %s" % cbindgen)
 
-    cbindgen_min_version = Version('0.8.6')
+    cbindgen_min_version = Version('0.8.7')
 
     # cbindgen x.y.z
     version = Version(check_cmd_output(cbindgen, '--version').strip().split(" ")[1])

taskcluster/scripts/misc/build-cbindgen.sh

@@ -3,7 +3,7 @@ set -x -e -v
 
 # If you update this, make sure to update the minimum version in
 # build/moz.configure/bindgen.configure as well.
-CBINDGEN_REVISION=5ec5a82d268c8fe907767394ee7ad15718f3f09d # v0.8.6
+CBINDGEN_REVISION=23a991a5b21e89aa1dcdc70f1371be20c93ece8e # v0.8.7
 TARGET="$1"
 
 case "$(uname -s)" in