Do not show untrustworthy strings in the basic auth dialog.

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 ea588c4357d5fd9ff1b33f701cbc2d9025fdabe6..eefcfffb637d59e9bb37175637340ab0b42f3508 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -3434,17 +3434,11 @@ Even if you have downloaded files from this website before, the website might ha
       <message name="IDS_LOGIN_DIALOG_TITLE" desc="String to be displayed in the title bar of the login prompt dialog" formatter_data="android_java">
         Authentication Required
       </message>
-      <message name="IDS_LOGIN_DIALOG_DESCRIPTION" desc="String to be displayed in the login prompt dialog to explain what the user needs to do">
-        The server <ph name="DOMAIN">$1<ex>google.com</ex></ph> requires a username and password. The server says: <ph name="REALM">$2<ex>opaque string</ex></ph>.
+      <message name="IDS_LOGIN_DIALOG_AUTHORITY" desc="String to be displayed in the login prompt dialog to explain that the user needs to log in, and the name of the web site">
+        <ph name="DOMAIN">$1<ex>google.com</ex></ph> requires a username and password.
       </message>
-      <message name="IDS_LOGIN_DIALOG_DESCRIPTION_NO_REALM" desc="String to be displayed in the login prompt dialog to explain what the user needs to do">
-        The server <ph name="DOMAIN">$1<ex>google.com</ex></ph> requires a username and password.
-      </message>
-      <message name="IDS_LOGIN_DIALOG_DESCRIPTION_PROXY" desc="String to be displayed in the proxy login prompt dialog to explain what the user needs to do">
-        The proxy <ph name="DOMAIN">$1<ex>google.com</ex></ph> requires a username and password. The proxy says: <ph name="REALM">$2<ex>opaque string</ex></ph>.

[meacer, 2015/11/20 00:31:30]

The proxy strings were just added today by
https://codereview.chromium.org/1460873003

I think we should keep differentiating between proxy and http auth.

[palmer, 2015/11/20 01:29:53]

Done.

-      </message>
-      <message name="IDS_LOGIN_DIALOG_DESCRIPTION_PROXY_NO_REALM" desc="String to be displayed in the proxy login prompt dialog to explain what the user needs to do">
-        The proxy <ph name="DOMAIN">$1<ex>google.com</ex></ph> requires a username and password.
+      <message name="IDS_LOGIN_DIALOG_DESCRIPTION_NOT_SECURE" desc="String to be displayed in the login prompt to explain that the web site is not secure">
+        The connection to this site is not secure.
       </message>
       <message name="IDS_LOGIN_DIALOG_USERNAME_FIELD" desc="The label of the username field in the login prompt dialog" formatter_data="android_java">
         User Name: