Update the Blink recipe to use 'webkit_revision' instead of 'webkit_rev'

git-crup

 #!/usr/bin/env bash
 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 TOPLEVEL=$(git rev-parse --show-toplevel)
 TOPPERLEVEL=$(dirname $TOPLEVEL)
 
 cat <<EOF
 Sorry `whoami`, but the git-submodule flow has been deprecated in order to
@@ skipping 17 matching lines @@
 
 cat <<EOF
 2. Please add a .gclient file to $TOPPERLEVEL/.gclient of the form:
 # ======== .gclient begins =========
 solutions = [{
   'name': '$(basename "$TOPLEVEL")',
   'url': 'https://chromium.googlesource.com/chromium/src.git',
   'managed': False,
   'deps_file': '.DEPS.git',
   # Uncomment the following if you're doing blink development
-  # 'custom_vars': {'webkit_rev': ''},
+  # 'custom_vars': {'webkit_revision': ''},

[ghost stip (do not use), 2014/08/27 21:14:47]

I was under the impression that git-crup was deprecated.

[philipj_slow, 2014/08/27 21:19:23]

I found it when grepping so I updated it. Should I remove it or leave it broken
instead?

[szager1, 2014/08/27 21:29:02]

This change is fine, no point in deliberately breaking it.  We may revive it
some day.

 }]
 # ======== .gclient ends =========
 
 3. Run \`gclient sync\` to synchronize dependencies in your checkout instead of $(basename "$0")!
 EOF
 
 exit 1