Make a platform-independent ToolbarActionViewController

chrome/browser/ui/toolbar/toolbar_action_view_delegate.h

+// 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_TOOLBAR_ACTION_VIEW_DELEGATE_H_
+#define CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_DELEGATE_H_
+
+class ToolbarActionViewController;
+
+namespace content {
+class WebContents;
+}
+
+// The view that surrounds a ToolbarAction and typically owns the
+// ToolbarActionViewController.
+class ToolbarActionViewDelegate {
+ public:
+  // In some cases (such as when an action is shown in a menu), a substitute
+  // ToolbarActionViewController should be used for showing popups. This
+  // returns the preferred controller.
+  virtual ToolbarActionViewController* GetPreferredPopupViewController() = 0;
+
+  // Returns the current web contents.
+  virtual content::WebContents* GetCurrentWebContents() const = 0;
+
+  // Updates the view to reflect current state.
+  virtual void UpdateState() = 0;
+
+ protected:
+  virtual ~ToolbarActionViewDelegate() {}
+};
+
+#endif  // CHROME_BROWSER_UI_TOOLBAR_TOOLBAR_ACTION_VIEW_DELEGATE_H_