Add git_cl recipe module.

recipe_modules/git_cl/example.expected/basic.json

Index: recipe_modules/git_cl/example.expected/basic.json
diff --git a/recipe_modules/git_cl/example.expected/basic.json b/recipe_modules/git_cl/example.expected/basic.json
new file mode 100644
index 0000000000000000000000000000000000000000..e85b5dec3323d7028602e7f03530553c63e17496
--- /dev/null
+++ b/recipe_modules/git_cl/example.expected/basic.json
@@ -0,0 +1,66 @@
+[
+  {
+    "cmd": [
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_cl.py",
+      "-d"
+    ],
+    "cwd": "[TMP_BASE]/fakee_tmp_1",
+    "name": "git_cl description",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "echo",
+      "hi"
+    ],
+    "name": "echo"
+  },
+  {
+    "cmd": [
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_cl.py",
+      "-d"
+    ],
+    "cwd": "[TMP_BASE]/fakerepo_tmp_2",
+    "name": "git_cl description (2)",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "echo",
+      "hey"
+    ],
+    "name": "echo (2)"
+  },
+  {
+    "cmd": [
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_cl.py",
+      "-n",
+      "-"
+    ],
+    "cwd": "[TMP_BASE]/fakerepo_tmp_2",
+    "name": "git_cl set description",
+    "stdin": "new description woo",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "RECIPE_PACKAGE_REPO[depot_tools]/git_cl.py",
+      "-d"
+    ],
+    "cwd": "[TMP_BASE]/fakerepo_tmp_2",
+    "name": "git_cl description (3)",
+    "stdout": "/path/to/tmp/"
+  },
+  {
+    "cmd": [
+      "echo",
+      "new description woo"
+    ],
+    "name": "echo (3)"
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]