Move undo files into //components/undo

components/undo/DEPS

Index: components/undo/DEPS
diff --git a/components/undo/DEPS b/components/undo/DEPS
new file mode 100644
index 0000000000000000000000000000000000000000..a70c7a841c05fc71db69b106db610eda0bf843fe
--- /dev/null
+++ b/components/undo/DEPS
@@ -0,0 +1,17 @@
+include_rules = [
+  # undo component is used on iOS and desktop and thus must not depends on
+  # system-specific directories.
+  "-content",
+  "-ios",
+
+  "+components/bookmarks/browser",
+  "+components/keyed_service/core",
+  "+grit/components_strings.h",
+  "+ui/base",
+]
+
+specific_include_rules = {
+  ".*_test\.cc": [
+    "+components/bookmarks/test",
+  ],
+}