[inspector] automatically add linux_trusty_blink_rel for any inspector CL

R=dgozman@chromium.org,machenbach@chromium.org

Bug: none
Cq-Include-Trybots: master.tryserver.blink:linux_trusty_blink_rel
Change-Id: Iccbcd55defe4f8c3ad68519ead300197e15d5d6f
Reviewed-on: https://chromium-review.googlesource.com/574635
Commit-Queue: Aleksey Kozyatinskiy <kozyatinskiy@chromium.org>
Reviewed-by: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#46740}

src/inspector/PRESUBMIT.py

@@ -53,3 +53,16 @@ def CheckChangeOnCommit(input_api, output_api):
   results = []
   results.extend(_CompileScripts(input_api, output_api))
   return results
+
+def PostUploadHook(cl, change, output_api):
+  """git cl upload will call this hook after the issue is created/modified.
+
+  This hook adds extra try bots to the CL description in order to run layout
+  tests in addition to CQ try bots.
+  """
+  return output_api.EnsureCQIncludeTrybotsAreAdded(
+    cl,
+    [
+      'master.tryserver.blink:linux_trusty_blink_rel'
+    ],
+    'Automatically added layout test trybots to run tests on CQ.')