Set an href for the extension options pages link to get the correct mouse over

behaviour.

BUG=409319
[email protected]

Review URL: https://codereview.chromium.org/657143002

Cr-Commit-Position: refs/heads/master@{#299749}

Author: kalman

chrome/browser/resources/extensions/extension_list.js

@@ -279,6 +279,10 @@ cr.define('options', function() {
         var options, optionsClickListener;
         if (extension.optionsOpenInTab) {
           options = node.querySelector('.options-link');
+          // Set an href to get the correct mouse-over appearance (link,
+          // footer) - but the actual link opening is done through chrome.send
+          // with a preventDefault().
+          options.setAttribute('href', extension.optionsPageHref);
           optionsClickListener = function() {
             chrome.send('extensionSettingsOptions', [extension.id]);
           };

chrome/browser/ui/webui/extensions/extension_settings_handler.cc

@@ -287,6 +287,8 @@ base::DictionaryValue* ExtensionSettingsHandler::CreateExtensionDetailValue(
       ManifestURL::SpecifiedHomepageURL(extension));
   extension_data->SetBoolean("optionsOpenInTab",
                              OptionsPageInfo::ShouldOpenInTab(extension));
+  extension_data->SetString("optionsPageHref",
+                            OptionsPageInfo::GetOptionsPage(extension).spec());
 
   // Add dependent extensions.
   base::ListValue* dependents_list = new base::ListValue;