Windows: Fix the plugin metadata check to determine if Adobe Reader is secure.

BUG=412242
TEST=manual, see bug.

Review URL: https://codereview.chromium.org/549313003

Cr-Commit-Position: refs/heads/master@{#294034}

chrome/browser/ui/pdf/adobe_reader_info_win.cc

@@ -94,10 +94,13 @@ AdobeReaderPluginInfo GetReaderPlugin(
       reader_info.is_enabled = plugin_status != PluginPrefs::POLICY_DISABLED;
     }
 
-    PluginMetadata::SecurityStatus security_status =
+    // Adobe Reader will likely always come up as "requires_authorization".
+    // See http://crbug.com/311655.
+    PluginMetadata::SecurityStatus security_stat =
         plugin_metadata->GetSecurityStatus(plugins[i]);
     reader_info.is_secure =
-        security_status == PluginMetadata::SECURITY_STATUS_UP_TO_DATE;
+        security_stat == PluginMetadata::SECURITY_STATUS_UP_TO_DATE ||
+        security_stat == PluginMetadata::SECURITY_STATUS_REQUIRES_AUTHORIZATION;
 
     reader_info.plugin_info = plugins[i];
     break;