Add ability to limit when context menu items appear with url patterns....

chrome/browser/extensions/extension_menu_manager.cc

Index: chrome/browser/extensions/extension_menu_manager.cc
===================================================================
--- chrome/browser/extensions/extension_menu_manager.cc	(revision 52866)
+++ chrome/browser/extensions/extension_menu_manager.cc	(working copy)
@@ -96,6 +96,9 @@
   children_.push_back(item);
 }
 
+const int ExtensionMenuManager::kAllowedSchemes =
+    URLPattern::SCHEME_HTTP | URLPattern::SCHEME_HTTPS;
+
 ExtensionMenuManager::ExtensionMenuManager() {
   registrar_.Add(this, NotificationType::EXTENSION_UNLOADED,
                  NotificationService::AllSources());
@@ -446,3 +449,9 @@
     const std::string& extension_id) {
   return icon_manager_.GetIcon(extension_id);
 }
+
+// static
+bool ExtensionMenuManager::HasAllowedScheme(const GURL& url) {
+  URLPattern pattern(kAllowedSchemes);
+  return pattern.SetScheme(url.scheme());
+}