Add PDF extension support (issue #1565)

libcef/browser/extensions/extension_system.h

@@ -0,0 +1,124 @@
+// Copyright 2015 The Chromium Embedded Framework Authors.
+// Portions 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 CEF_LIBCEF_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_H_
+#define CEF_LIBCEF_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_H_
+
+#include <vector>
+
+#include "base/compiler_specific.h"
+#include "extensions/browser/extension_system.h"
+#include "extensions/common/one_shot_event.h"
+
+class BrowserContextKeyedServiceFactory;
+
+namespace base {
+class FilePath;
+}
+
+namespace content {
+class BrowserContext;
+}
+
+namespace extensions {
+
+class ExtensionRegistry;
+class InfoMap;
+class ProcessManager;
+class RendererStartupHelper;
+class SharedUserScriptMaster;
+
+// Used to manage extensions.
+class CefExtensionSystem : public ExtensionSystem {
+ public:
+  explicit CefExtensionSystem(content::BrowserContext* browser_context);
+  ~CefExtensionSystem() override;
+
+  // Initializes the extension system.
+  void Init();
+
+  // Add an extension. Returns the new Extension object on success or NULL on
+  // failure.
+  const Extension* AddExtension(const std::string& manifest_contents,
+                                const base::FilePath& root_directory);
+
+  // Remove an extension.
+  void RemoveExtension(const std::string& extension_id);
+
+  // KeyedService implementation:
+  void Shutdown() override;
+
+  // ExtensionSystem implementation:
+  void InitForRegularProfile(bool extensions_enabled) override;
+  ExtensionService* extension_service() override;
+  RuntimeData* runtime_data() override;
+  ManagementPolicy* management_policy() override;
+  SharedUserScriptMaster* shared_user_script_master() override;
+  StateStore* state_store() override;
+  StateStore* rules_store() override;
+  InfoMap* info_map() override;
+  QuotaService* quota_service() override;
+  void RegisterExtensionWithRequestContexts(
+      const Extension* extension) override;
+  void UnregisterExtensionWithRequestContexts(
+      const std::string& extension_id,
+      const UnloadedExtensionInfo::Reason reason) override;
+  const OneShotEvent& ready() const override;
+  ContentVerifier* content_verifier() override;
+  scoped_ptr<ExtensionSet> GetDependentExtensions(
+      const Extension* extension) override;
+
+ private:
+  // Information about a registered component extension.
+  struct ComponentExtensionInfo {
+    ComponentExtensionInfo(const base::DictionaryValue* manifest,
+                           const base::FilePath& root_directory);
+
+    // The parsed contents of the extensions's manifest file.
+    const base::DictionaryValue* manifest;
+
+    // Directory where the extension is stored.
+    base::FilePath root_directory;
+
+    // The component extension's ID.
+    std::string extension_id;
+  };
+
+  // Loads a registered component extension.
+  const Extension* LoadExtension(const ComponentExtensionInfo& info);
+
+  // Unload the specified extension.
+  void UnloadExtension(
+      const std::string& extension_id,
+      extensions::UnloadedExtensionInfo::Reason reason);
+
+  // Handles sending notification that |extension| was loaded.
+  void NotifyExtensionLoaded(const Extension* extension);
+
+  // Handles sending notification that |extension| was unloaded.
+  void NotifyExtensionUnloaded(
+      const Extension* extension,
+      UnloadedExtensionInfo::Reason reason);
+
+  content::BrowserContext* browser_context_;  // Not owned.
+
+  // Data to be accessed on the IO thread. Must outlive process_manager_.
+  scoped_refptr<InfoMap> info_map_;
+
+  scoped_ptr<RuntimeData> runtime_data_;
+  scoped_ptr<QuotaService> quota_service_;
+
+  // Signaled when the extension system has completed its startup tasks.
+  OneShotEvent ready_;
+
+  // Sets of enabled/disabled/terminated/blacklisted extensions. Not owned.
+  ExtensionRegistry* registry_;
+
+  DISALLOW_COPY_AND_ASSIGN(CefExtensionSystem);
+};
+
+}  // namespace extensions
+
+#endif  // CEF_LIBCEF_BROWSER_EXTENSIONS_EXTENSION_SYSTEM_H_