Add new mark-non-secure-as options to chrome://flags on iOS

ios/chrome/browser/ios_chrome_flag_descriptions.cc

Index: ios/chrome/browser/ios_chrome_flag_descriptions.cc
diff --git a/ios/chrome/browser/ios_chrome_flag_descriptions.cc b/ios/chrome/browser/ios_chrome_flag_descriptions.cc
index 217f55c2484aee54e73f992820f3540c393fdc55..3e495df6a22593690cbace2aa3f695f0f02a1f9c 100644
--- a/ios/chrome/browser/ios_chrome_flag_descriptions.cc
+++ b/ios/chrome/browser/ios_chrome_flag_descriptions.cc
@@ -27,4 +27,15 @@ const char kPhysicalWebDescription[] =
     "When enabled, the omnibox will include suggestions for web pages "
     "broadcast by devices near you.";
 
+const char kMarkHttpAsName[] = "Mark non-secure origins as non-secure";
+
+const char kMarkHttpAsDescription[] = "Change the UI treatment for HTTP pages";
+const char kMarkHttpAsDangerous[] = "Always mark HTTP as actively dangerous";
+const char kMarkHttpAsNonSecureAfterEditing[] =
+    "Warn on HTTP after editing forms";
+const char kMarkHttpAsNonSecureWhileIncognito[] =
+    "Warn on HTTP while in Incognito mode";
+const char kMarkHttpAsNonSecureWhileIncognitoOrEditing[] =
+    "Warn on HTTP while in Incognito mode or after editing forms";
+
 }  // namespace flag_descriptions