Add field trial and flag to mark HTTP as non-secure.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index cc2b7c0cb42547743c4abb3869dceca0f0ce4edd..9410855e14ba0c1b6c056e65c6d93f6c3bf330d2 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5686,6 +5686,21 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_NACL_DEBUG_MASK_CHOICE_INCLUDE_DEBUG">
         Debug only if manifest URL ends with debug.nmf.
       </message>
+      <message name="IDS_MARK_HTTP_AS_NON_SECURE_NAME" desc="Name of the 'Mark HTTP As Non-Secure' lab.">
+        Mark HTTP as non-secure
+      </message>
+      <message name="IDS_MARK_HTTP_AS_NON_SECURE_DESCRIPTION" desc="Description of the 'Mark HTTP As Non-Secure' lab.">
+        Mark HTTP as non-secure, or as "dubious".
+      </message>
+      <message name="IDS_MARK_HTTP_AS_NON_SECURE_CHOICE_NO">
+        Do not mark HTTP as non-secure or as dubious.
+      </message>
+      <message name="IDS_MARK_HTTP_AS_NON_SECURE_CHOICE_NON_SECURE">
+        Mark HTTP as non-secure.
+      </message>
+      <message name="IDS_MARK_HTTP_AS_NON_SECURE_CHOICE_DUBIOUS">
+        Mark HTTP as dubious.
+      </message>
       <message name="IDS_FLAGS_SAVE_PAGE_AS_MHTML_NAME" desc="Name of the 'Save Page as MHTML' lab.">
         Save Page as MHTML
       </message>