app_shell: Extract extension runtime data from ExtensionService

extensions/browser/runtime_data.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 EXTENSIONS_BROWSER_RUNTIME_DATA_H_
+#define EXTENSIONS_BROWSER_RUNTIME_DATA_H_
+
+#include <map>
+#include <string>
+
+namespace extensions {
+
+class Extension;
+
+// Contains per-extension data that can change during the life of the process,
+// but does not persist across restarts. Shared between incognito and regular
+// browser contexts. Lives on the UI thread.
+class RuntimeData {
+ public:
+  RuntimeData();
+  ~RuntimeData();
+
+  // Erase runtime data for |extension|.
+  void Erase(const Extension* extension);
+
+  // Erase runtime data for all extensions.
+  void ClearAll();
+
+  // Whether the persistent background page, if any, is ready. We don't load
+  // other components until then. If there is no background page, or if it is
+  // non-persistent (lazy), we consider it to be ready.
+  bool IsBackgroundPageReady(const Extension* extension) const;
+  void SetBackgroundPageReady(const Extension* extension, bool value);
+
+  // Getter and setter for the flag that specifies whether the extension is
+  // being upgraded.
+  bool IsBeingUpgraded(const Extension* extension) const;
+  void SetBeingUpgraded(const Extension* extension, bool value);
+
+  // Getter and setter for the flag that specifies if the extension has used
+  // the webrequest API.
+  // TODO(mpcomplete): remove. http://crbug.com/100411
+  bool HasUsedWebRequest(const Extension* extension) const;
+  void SetHasUsedWebRequest(const Extension* extension, bool value);
+
+ private:
+  // Bitmasks for runtime states.
+  enum RuntimeFlag {
+    // Set if the background page is ready.
+    BACKGROUND_PAGE_READY = 1 << 0,
+    // Set while the extension is being upgraded.
+    BEING_UPGRADED        = 1 << 1,
+    // Set if the extension has used the webRequest API.
+    HAS_USED_WEBREQUEST   = 1 << 2,
+  };
+
+  // Returns the setting for the flag or false if the extenion isn't found.
+  bool GetFlag(const Extension* extension, RuntimeFlag flag) const;

[not at google - send to devlin, 2014/01/21 18:47:47]

nit: HasFlag?

+
+  void SetFlag(const Extension* extension, RuntimeFlag flag, bool value);
+
+  // Map from extension ID to the RuntimeFlags bits.
+  typedef std::map<std::string, int> ExtensionFlagsMap;
+  ExtensionFlagsMap extension_flags_;
+};
+
+}  // namespace extensions
+
+#endif  // EXTENSIONS_BROWSER_RUNTIME_DATA_H_