Add infrastructure for Chrome Actions

chrome/browser/ui/toolbar/component_toolbar_actions_factory.h

Index: chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
diff --git a/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h b/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
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+++ b/chrome/browser/ui/toolbar/component_toolbar_actions_factory.h
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+// Copyright 2014 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.
+
+#ifndef CHROME_BROWSER_UI_TOOLBAR_COMPONENT_TOOLBAR_ACTIONS_FACTORY_H_
+#define CHROME_BROWSER_UI_TOOLBAR_COMPONENT_TOOLBAR_ACTIONS_FACTORY_H_
+
+#include "base/macros.h"
+#include "base/memory/scoped_vector.h"
+
+class Profile;
+class ToolbarActionViewController;
+
+// The registry for all component toolbar actions. Component toolbar actions
+// are actions that live in the toolbar (like extension actions), but are
+// components of chrome, such as ChromeCast.
+class ComponentToolbarActionsFactory {
+ public:
+  ComponentToolbarActionsFactory();
+  ~ComponentToolbarActionsFactory();
+
+  static ComponentToolbarActionsFactory* GetInstance();
+
+  // Returns a collection of controllers for Chrome Actions. Declared virtual
+  // for testing.
+  virtual ScopedVector<ToolbarActionViewController>
+      GetComponentToolbarActions();
+
+  // Sets the factory to use for testing purposes.
+  // Ownership remains with the caller.
+  static void SetTestingFactory(ComponentToolbarActionsFactory* factory);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ComponentToolbarActionsFactory);
+};
+
+#endif  // CHROME_BROWSER_UI_TOOLBAR_COMPONENT_TOOLBAR_ACTIONS_FACTORY_H_