Add URL recipe module from "depot_tools".

recipe_modules/url/example.expected/basic.json

Index: recipe_modules/url/example.expected/basic.json
diff --git a/recipe_modules/url/example.expected/basic.json b/recipe_modules/url/example.expected/basic.json
new file mode 100644
index 0000000000000000000000000000000000000000..f49edb2120dfa6ff35595bb07ab83894a92b30d0
--- /dev/null
+++ b/recipe_modules/url/example.expected/basic.json
@@ -0,0 +1,106 @@
+[
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "[START_DIR]",
+      "--headers-json",
+      "{\"Authorization\": \"thing\"}"
+    ],
+    "name": "GET https://foo/bar"
+  },
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar/error",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "[START_DIR]"
+    ],
+    "name": "GET https://foo/bar/error"
+  },
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar/text",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "/path/to/tmp/"
+    ],
+    "name": "GET https://foo/bar/text"
+  },
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar/text (w/ auth)",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "/path/to/tmp/",
+      "--headers-json",
+      "{\"Authorization\": \"thing\"}",
+      "--no-transient-retry"
+    ],
+    "name": "GET https://foo/bar/text (w/ auth)"
+  },
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar/text/error",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "/path/to/tmp/"
+    ],
+    "infra_step": true,
+    "name": "GET https://foo/bar/text/error"
+  },
+  {
+    "cmd": [
+      "vpython",
+      "-u",
+      "RECIPE_MODULE[recipe_engine::url]/resources/pycurl.py",
+      "--url",
+      "https://foo/bar/json",
+      "--status-json",
+      "/path/to/tmp/json",
+      "--outfile",
+      "/path/to/tmp/json",
+      "--strip-prefix",
+      ")]}\n"
+    ],
+    "name": "GET https://foo/bar/json",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output[output]@{@@@",
+      "@@@STEP_LOG_LINE@json.output[output]@  \"baz\": \"qux\", @@@",
+      "@@@STEP_LOG_LINE@json.output[output]@  \"foo\": \"bar\"@@@",
+      "@@@STEP_LOG_LINE@json.output[output]@}@@@",
+      "@@@STEP_LOG_END@json.output[output]@@@"
+    ]
+  },
+  {
+    "name": "$result",
+    "recipe_result": null,
+    "status_code": 0
+  }
+]