Only return the visible page actions from PageActionController.

chrome/browser/extensions/action_box_controller.cc

+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/extensions/action_box_controller.h"
+
+#include <algorithm>
+
+namespace extensions {
+
+// static
+void ActionBoxController::AddMissingActions(
+    const std::set<ExtensionAction*>& actions,
+    std::vector<ExtensionAction*>* out) {

[Matt Perry, 2012/05/17 00:17:24]

std::set_union(actions.begin(), actions.end(), out->begin(), out->end(),
std::back_inserter(*out));

[not at google - send to devlin, 2012/05/17 01:30:35]

nice

+  for (std::set<ExtensionAction*>::const_iterator it = actions.begin();
+       it != actions.end(); ++it) {
+    ExtensionAction* action = (*it);
+    if (!std::count(out->begin(), out->end(), action))
+      out->push_back(action);
+  }
+}
+
+}  // namespace extensions