Refactor SecurityStateModel/Clients for simplicity and reusability.

components/security_state/content/DEPS

Index: components/security_state/content/DEPS
diff --git a/components/security_state/content/DEPS b/components/security_state/content/DEPS
new file mode 100644
index 0000000000000000000000000000000000000000..723a520673ce95dc0f4d482811c5b7c90d5f4bcf
--- /dev/null
+++ b/components/security_state/content/DEPS
@@ -0,0 +1,16 @@
+include_rules = [
+  "+components/strings",
+  "+content/public/browser",
+  "+content/public/common",
+  "+content/public/test",
+  "+third_party/boringssl/src/include",
+  # Allow inclusion of WebKit API headers (POD/enum only).
+  "+third_party/WebKit/public/platform/WebSecurityStyle.h",
+  "+ui/base",
+]
+
+specific_include_rules = {
+  "content_utils_browsertest\.cc": [
+    "+content/shell",
+  ]
+}