Make the page action space show extensions with active content scripts or

chrome/browser/extensions/script_badge_controller.h

Index: chrome/browser/extensions/script_badge_controller.h
diff --git a/chrome/browser/extensions/script_badge_controller.h b/chrome/browser/extensions/script_badge_controller.h
new file mode 100644
index 0000000000000000000000000000000000000000..77f728604c85ddf97f8b767cd25d3b30d288b4b8
--- /dev/null
+++ b/chrome/browser/extensions/script_badge_controller.h
@@ -0,0 +1,81 @@
+// 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_
+#define CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_
+#pragma once
+
+#include <map>
+#include <set>
+#include <string>
+
+#include "base/memory/linked_ptr.h"
+#include "chrome/browser/extensions/action_box_controller.h"
+#include "chrome/browser/extensions/script_executor.h"
+#include "chrome/browser/extensions/script_executor_impl.h"
+#include "content/public/browser/web_contents_observer.h"
+
+class Extension;
+class ExtensionAction;
+class ExtensionService;
+class TabContentsWrapper;
+
+namespace extensions {
+
+// An ActionBoxController which corresponds to script badges, and implements
+// ScriptExecutor in order to show those scripts in the action box too.
+class ScriptBadgeController : public ActionBoxController,
+                              public ScriptExecutor,
+                              public content::WebContentsObserver {
+ public:
+  explicit ScriptBadgeController(TabContentsWrapper* tab_contents);
+  virtual ~ScriptBadgeController();
+
+  // ActionBoxController implementation.
+  virtual scoped_ptr<std::vector<ExtensionAction*> > GetCurrentActions()
+      OVERRIDE;
+  virtual Action OnClicked(const std::string& extension_id,
+                           int mouse_button) OVERRIDE;
+
+  // ScriptExecutor implementation.
+  virtual void ExecuteScript(const std::string& extension_id,
+                             ScriptType script_type,
+                             const std::string& code,
+                             FrameScope frame_scope,
+                             UserScript::RunLocation run_at,
+                             WorldType world_type,
+                             const ExecuteScriptCallback& callback) OVERRIDE;
+
+  // content::WebContentsObserver implementation.
+  virtual void DidNavigateMainFrame(
+      const content::LoadCommittedDetails& details,
+      const content::FrameNavigateParams& params) OVERRIDE;
+
+ private:
+  // Gets the script badge for |extension|.
+  ExtensionAction* GetScriptBadge(const Extension* extension);
+
+  // Gets the ExtensionService for |tab_contents_|.
+  ExtensionService* GetExtensionService();
+
+  // Delegate ScriptExecutorImpl for running ExecuteScript.
+  ScriptExecutorImpl script_executor_;
+
+  // Our parent TabContentsWrapper.
+  TabContentsWrapper* tab_contents_;
+
+  // The extensions that have called ExecuteScript on the current frame.
+  std::set<std::string> extensions_executing_scripts_;
+
+  // Script badges that have been generated for extensions. This is both those
+  // with actions already declared that are copied and normalised, and actions
+  // that get generated for extensions that haven't declared anything.
+  std::map<std::string, linked_ptr<ExtensionAction> > script_badges_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScriptBadgeController);
+};
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_SCRIPT_BADGE_CONTROLLER_H_