Http Bad: Add "Learn more" sublabel to warning message and make it clickable

chrome/browser/ui/autofill/chrome_autofill_client.cc

Index: chrome/browser/ui/autofill/chrome_autofill_client.cc
diff --git a/chrome/browser/ui/autofill/chrome_autofill_client.cc b/chrome/browser/ui/autofill/chrome_autofill_client.cc
index 70354e9f7576431024ac355421e35e56277704e9..3177d670bdaa28c774f6a6395d539605e48b179f 100644
--- a/chrome/browser/ui/autofill/chrome_autofill_client.cc
+++ b/chrome/browser/ui/autofill/chrome_autofill_client.cc
@@ -75,6 +75,13 @@ DEFINE_WEB_CONTENTS_USER_DATA_KEY(autofill::ChromeAutofillClient);
 
 namespace autofill {
 
+namespace {
+
+const char kSecurityIndicatorHelpCenterUrl[] =
+    "https://support.google.com/chrome/answer/95617?hl=en";
+
+}  // anonymous namespace
+
 ChromeAutofillClient::ChromeAutofillClient(content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents),
       unmask_controller_(
@@ -392,4 +399,11 @@ void ChromeAutofillClient::StartSigninFlow() {
 #endif
 }
 
+void ChromeAutofillClient::ShowHttpNotSecureExplanation() {
+  web_contents()->OpenURL(content::OpenURLParams(
+      GURL(kSecurityIndicatorHelpCenterUrl), content::Referrer(),
+      WindowOpenDisposition::NEW_FOREGROUND_TAB, ui::PAGE_TRANSITION_LINK,
+      false /* is_renderer_initiated */));
+}
+
 }  // namespace autofill