Refactor SecurityStateModel/Clients for simplicity and reusability.

components/components_chromium_strings.grd

Index: components/components_chromium_strings.grd
diff --git a/components/components_chromium_strings.grd b/components/components_chromium_strings.grd
index e3019ed5b4bb8ad97ac16b793f8f8ad70ea59778..7eee27468fd77b5d6f86595d97f8125eeac48eb8 100644
--- a/components/components_chromium_strings.grd
+++ b/components/components_chromium_strings.grd
@@ -216,6 +216,14 @@
       <message name="IDS_SESSION_CRASHED_VIEW_MESSAGE" desc="Message shown when the last session didn't exit cleanly.">
         Chromium didn't shut down correctly.
       </message>
+
+      <!-- Strings describing Chromium security policy for DevTools security panel -->
+      <message name="IDS_PRIVATE_USER_DATA_INPUT_FUTURE_DESCRIPTION" desc="Description of a security problem where the site collects private user data on an insecure page, which will result in an omnibox warning in future versions of Chromium." translateable="false">
+        This page includes a password or credit card input over HTTP. A warning will be added to the URL bar starting in Chromium 56 (Jan 2017).
+      </message>
+      <message name="IDS_PRIVATE_USER_DATA_INPUT_DESCRIPTION" desc="Description of a security problem where the site collects private user data on an insecure page, which results in an omnibox warning." translateable="false">
+        This page includes a password or credit card input over HTTP. A warning has been added to the URL bar.
+      </message>
     </messages>
   </release>
 </grit>