Read Skia's CQ required steps from the buildbot master.

Created to fix the feature request https://code.google.com/p/skia/issues/detail?id=1334 : Commit Queue should get the list of required build steps from Skia's master.

Review URL: https://chromiumcodereview.appspot.com/22409003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/commit-queue@215906 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/projects.py b/projects.py
index 390143d..8a6d5bf 100644
--- a/projects.py
+++ b/projects.py
@@ -512,6 +512,10 @@
         'BuildTools',
     ]
 
+    # Get the required build steps and builder names from the try server.
+    compile_required_build_steps = json.load(
+        urllib2.urlopen(
+            try_server_url + 'json/cq_required_steps'))['cq_required_steps']
     builder_names = list(
         json.load(urllib2.urlopen(try_server_url + 'json/cqtrybots')))