Add custom interstitial for captive portals.

chrome/browser/resources/security_warnings/interstitial_v2.js

Index: chrome/browser/resources/security_warnings/interstitial_v2.js
diff --git a/chrome/browser/resources/security_warnings/interstitial_v2.js b/chrome/browser/resources/security_warnings/interstitial_v2.js
index ab376c277ee056b22268d083dafd98bd7fd43f35..3c5a77c6829c7c67468a4d0ab80900d0a9c399cb 100644
--- a/chrome/browser/resources/security_warnings/interstitial_v2.js
+++ b/chrome/browser/resources/security_warnings/interstitial_v2.js
@@ -66,25 +66,33 @@ function toggleDebuggingInfo() {
 function setupEvents() {
   var overridable = loadTimeData.getBoolean('overridable');
   var ssl = loadTimeData.getString('type') === 'SSL';
+  var captivePortal = loadTimeData.getString('type') == 'CAPTIVE_PORTAL';
 
   if (ssl) {
     $('body').classList.add('ssl');
     $('error-code').textContent = loadTimeData.getString('errorCode');
     $('error-code').classList.remove('hidden');
+  } else if (captivePortal) {
+    $('body').classList.add('captive-portal');
   } else {
     $('body').classList.add('safe-browsing');
   }
 
   $('primary-button').addEventListener('click', function() {
-    if (!ssl)
+    if (captivePortal) {
+      sendCommand(CAPTIVEPORTAL_CMD_OPEN_LOGIN_PAGE);
+    } else if (ssl) {
+      if (overridable)
+        sendCommand(SSL_CMD_DONT_PROCEED);
+      else
+        sendCommand(SSL_CMD_RELOAD);
+    } else {
       sendCommand(SB_CMD_TAKE_ME_BACK);
-    else if (overridable)
-      sendCommand(SSL_CMD_DONT_PROCEED);
-    else
-      sendCommand(SSL_CMD_RELOAD);
+    }
   });
 
   if (overridable) {
+    // Captive portal page isn't overridable.
     $('proceed-link').addEventListener('click', function(event) {
       sendCommand(ssl ? SSL_CMD_PROCEED : SB_CMD_PROCEED);
     });
@@ -112,17 +120,22 @@ function setupEvents() {
     });
   }
 
-  $('details-button').addEventListener('click', function(event) {
-    var hiddenDetails = $('details').classList.toggle('hidden');
-    $('details-button').innerText = hiddenDetails ?
-        loadTimeData.getString('openDetails') :
-        loadTimeData.getString('closeDetails');
-    if (!expandedDetails) {
-      // Record a histogram entry only the first time that details is opened.
-      sendCommand(ssl ? SSL_CMD_MORE : SB_CMD_EXPANDED_SEE_MORE);
-      expandedDetails = true;
-    }
-  });
+  if (captivePortal) {
+    // Captive portal page doesn't have details button.
+    $('details-button').classList.add('hidden');
+  } else {
+    $('details-button').addEventListener('click', function(event) {
+      var hiddenDetails = $('details').classList.toggle('hidden');
+      $('details-button').innerText = hiddenDetails ?
+          loadTimeData.getString('openDetails') :
+          loadTimeData.getString('closeDetails');
+      if (!expandedDetails) {
+        // Record a histogram entry only the first time that details is opened.
+        sendCommand(ssl ? SSL_CMD_MORE : SB_CMD_EXPANDED_SEE_MORE);
+        expandedDetails = true;
+      }
+    });
+  }
 
   preventDefaultOnPoundLinkClicks();
   setupCheckbox();