Bring back the URLLoader from the old Mandoline network service.

content/network/DEPS

Index: content/network/DEPS
diff --git a/content/network/DEPS b/content/network/DEPS
new file mode 100644
index 0000000000000000000000000000000000000000..1fd2fa1f843e0e545c36f61a5bff500eb583b1d7
--- /dev/null
+++ b/content/network/DEPS
@@ -0,0 +1,19 @@
+# Tight rules since this will move to services/network. See README.
+include_rules = [
+  "-content",
+  "+content/common/content_export.h",
+  "+content/common/url_loader.mojom.h",
+  "+content/network",
+  "+content/public/browser/browser_thread.h",
+  "+content/public/common/content_client.h",
+  "+content/public/common/referrer.h",
+  "+content/public/common/resource_response.h",
+]
+
+specific_include_rules = {
+  '.*_[a-z]*test.*': [
+    "+content/browser/loader/test_url_loader_client.h",
+    "+content/public/common/content_paths.h",
+    "+content/public/test/test_browser_thread.h",
+  ],
+}