Implement the Extension History API, v 0.1....

chrome/browser/extensions/extensions_service.cc

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/extensions/extensions_service.h"
 
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/string_util.h"
 #include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_thread.h"
 #include "chrome/browser/extensions/crx_installer.h"
 #include "chrome/browser/extensions/extension_browser_event_router.h"
 #include "chrome/browser/extensions/extension_dom_ui.h"
 #include "chrome/browser/extensions/extension_file_util.h"
+#include "chrome/browser/extensions/extension_history_api.h"
 #include "chrome/browser/extensions/extension_updater.h"
 #include "chrome/browser/extensions/external_extension_provider.h"
 #include "chrome/browser/extensions/external_pref_extension_provider.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/net/chrome_url_request_context.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/extension_error_reporter.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/pref_names.h"
@@ skipping 93 matching lines @@
 }
 
 void ExtensionsService::Init() {
   DCHECK(!ready_);
   DCHECK_EQ(extensions_.size(), 0u);
 
   // Hack: we need to ensure the ResourceDispatcherHost is ready before we load
   // the first extension, because its members listen for loaded notifications.
   g_browser_process->resource_dispatcher_host();
 
+  // Start up the extension event routers.
+  ExtensionHistoryEventRouter::GetInstance()->ObserveProfile(profile_);
+
   LoadAllExtensions();
 
   // TODO(erikkay) this should probably be deferred to a future point
   // rather than running immediately at startup.
   CheckForExternalUpdates();
 
   // TODO(erikkay) this should probably be deferred as well.
   GarbageCollectExtensions();
 }
 
@@ skipping 675 matching lines @@
       linked_ptr<ExternalExtensionProvider>(test_provider);
 }
 
 void ExtensionsServiceBackend::OnExternalExtensionFound(
     const std::string& id, const Version* version, const FilePath& path,
     Extension::Location location) {
   frontend_loop_->PostTask(FROM_HERE, NewRunnableMethod(frontend_,
       &ExtensionsService::OnExternalExtensionFound, id, version->GetString(),
       path, location));
 }