Add openscreen gclient config copy-pasta

This change should hopefully enable the openscreen repo to use the
run_presubmit recipe.

Bug: openscreen:43
Change-Id: I672cddfeddd09ccc25ca851c0b613293191f17f9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1574189
Commit-Queue: Andrii Shyshkalov <tandrii@chromium.org>
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>

recipes/README.recipes.md

@@ -931,7 +931,7 @@ Raises:
 
 [DEPS](/recipes/recipe_modules/gclient/examples/full.py#5): [gclient](#recipe_modules-gclient), [recipe\_engine/context][recipe_engine/recipe_modules/context], [recipe\_engine/path][recipe_engine/recipe_modules/path], [recipe\_engine/properties][recipe_engine/recipe_modules/properties], [recipe\_engine/step][recipe_engine/recipe_modules/step]
 
-— **def [RunSteps](/recipes/recipe_modules/gclient/examples/full.py#52)(api):**
+— **def [RunSteps](/recipes/recipe_modules/gclient/examples/full.py#53)(api):**
 ### *recipes* / [gclient:tests/patch\_project](/recipes/recipe_modules/gclient/tests/patch_project.py)
 
 [DEPS](/recipes/recipe_modules/gclient/tests/patch_project.py#9): [gclient](#recipe_modules-gclient), [recipe\_engine/buildbucket][recipe_engine/recipe_modules/buildbucket], [recipe\_engine/properties][recipe_engine/recipe_modules/properties]

recipes/recipe_modules/gclient/config.py

@@ -441,3 +441,10 @@ def celab(c):
   soln.name = 'cel'
   soln.url = 'https://chromium.googlesource.com/enterprise/cel.git'
   c.got_revision_mapping['cel'] = 'got_revision'
+
+@config_ctx()
+def openscreen(c):
+  s = c.solutions.add()
+  s.name = 'openscreen'
+  s.url = 'https://chromium.googlesource.com/openscreen'
+  c.got_revision_mapping['openscreen'] = 'got_revision'

recipes/recipe_modules/gclient/examples/full.py

@@ -38,6 +38,7 @@ TEST_CONFIGS = [
   'master_deps',
   'mojo',
   'nacl',
+  'openscreen',
   'pdfium',
   'recipes_py',
   'recipes_py_bare',