Change lookalike interstitial tab title to match in-page header

Bug: 991726
Change-Id: I5bdea1502d1b401dcbe79c0405f8745c226b36ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1911281
Auto-Submit: Mustafa Emre Acer <meacer@chromium.org>
Reviewed-by: Joe DeBlasio <jdeblasio@chromium.org>
Commit-Queue: Mustafa Emre Acer <meacer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#714564}

chrome/browser/lookalikes/lookalike_url_interstitial_page.cc

@@ -90,8 +90,8 @@ void LookalikeUrlInterstitialPage::PopulateInterstitialStrings(
   const base::string16 hostname =
       security_interstitials::common_string_util::GetFormattedHostName(
           request_url());
-  load_time_data->SetString("tabTitle",
-                            l10n_util::GetStringUTF16(IDS_LOOKALIKE_URL_TITLE));
+  load_time_data->SetString("tabTitle", l10n_util::GetStringFUTF16(
+                                            IDS_LOOKALIKE_URL_TITLE, hostname));
   load_time_data->SetString(
       "heading",
       l10n_util::GetStringFUTF16(IDS_LOOKALIKE_URL_HEADING, hostname));

components/security_interstitials_strings.grdp

@@ -66,7 +66,7 @@
 
   <!-- Lookalike URL warning -->
   <message name="IDS_LOOKALIKE_URL_TITLE" desc="Tab title. Context: the requested URL might be trying to trick the user since it looks like a more popular URL. This interstitial points the user to the safe site instead.">
-    Did you mean?
+    Did you mean <ph name="DOMAIN">$1<ex>example.com</ex></ph>?
   </message>
   <message name="IDS_LOOKALIKE_URL_HEADING" desc="Large heading. Context: the error page that's shown when the requested URL might be trying to trick the user since it looks like a more popular URL. This interstitial points the user to the safe site instead.">
     Did you mean &lt;a href="#" id="dont-proceed-link"&gt;<ph name="DOMAIN">$1<ex>example.com</ex></ph>&lt;/a&gt;?