The second solution solution for ToT catapult.

scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py

Index: scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py b/scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py
index 99dca2ba477d0b7ef51a3a6baeac69b159755178..f8c2e2d5ed7bffea89d8738cd4fb3a7e0cea0820 100644
--- a/scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py
+++ b/scripts/slave/recipe_modules/chromium_tests/tryserver_chromium_perf.py
@@ -2,8 +2,19 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+from recipe_engine import config as recipe_config
+
 from . import chromium_perf
 
+import DEPS
+CONFIG_CTX = DEPS['gclient'].CONFIG_CTX

[iannucci, 2016/08/08 23:00:52]

this might need to be 'depot_tools/gclient' to be fully-qualified, though if
this works as-is, I'm confused by that.

Typically this would have been housed in a file called `gclient_config.py`

+
+@CONFIG_CTX(includes=['chromium_perf'])
+def tryserver_chromium_perf(c):
+  soln = c.solutions.add()
+  soln.name = 'catapult'
+  soln.url = ('https://chromium.googlesource.com/external/github.com/'
+              'catapult-project/catapult.git')
 
 SPEC = {
   'builders': {},
@@ -14,6 +25,7 @@ SPEC = {
 def _AddBuildSpec(name, platform, target_bits=64):
   SPEC['builders'][name] = chromium_perf.BuildSpec(
       'tryserver_chromium_perf', None, platform, target_bits)
+  SPEC['builders'][name]['gclient_config'] = 'tryserver_chromium_perf'
 
 
 def _AddTestSpec(name, platform, target_bits=64):
@@ -22,6 +34,7 @@ def _AddTestSpec(name, platform, target_bits=64):
   spec = chromium_perf.BuildSpec(
       'tryserver_chromium_perf', None, platform, target_bits)
   del spec['tests']
+  spec['gclient_config'] = 'tryserver_chromium_perf'
   SPEC['builders'][name] = spec