Protocol handler dialogs should only be enabled by browser or page actions [Not committed]

chrome/browser/extensions/active_tab_permission_granter.cc

Index: chrome/browser/extensions/active_tab_permission_granter.cc
diff --git a/chrome/browser/extensions/active_tab_permission_granter.cc b/chrome/browser/extensions/active_tab_permission_granter.cc
index d7e00b0aa79d59a73cabc9fc81a40fba11c159d1..4316b48a7a594d5894bc66a09ef1f1b5d39dbfa0 100644
--- a/chrome/browser/extensions/active_tab_permission_granter.cc
+++ b/chrome/browser/extensions/active_tab_permission_granter.cc
@@ -6,6 +6,7 @@
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/external_protocol/external_protocol_handler.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "chrome/common/extensions/extension_messages.h"
@@ -37,6 +38,11 @@ ActiveTabPermissionGranter::ActiveTabPermissionGranter(
 ActiveTabPermissionGranter::~ActiveTabPermissionGranter() {}
 
 void ActiveTabPermissionGranter::GrantIfRequested(const Extension* extension) {
+
+  // Active tab implies user gesture, which should enable external protocol
+  // handler dialog.
+  ExternalProtocolHandler::PermitLaunchUrl();
+
   if (granted_extensions_.Contains(extension->id()))
     return;