Revert (4 of 4) 30153 - Introduce browser_sync::ExtensionsActivityMonitor to ...

chrome/browser/sync/util/extensions_activity_monitor.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/sync/util/extensions_activity_monitor.h"
-
-#include "base/task.h"
-#include "chrome/browser/chrome_thread.h"
-#include "chrome/browser/extensions/extension_bookmarks_module.h"
-#include "chrome/common/extensions/extension.h"
-#include "chrome/common/notification_service.h"
-
-namespace browser_sync {
-
-namespace {
-// A helper task to register an ExtensionsActivityMonitor as an observer of
-// events on the UI thread (even though the monitor may live on another thread).
-// This liberates ExtensionsActivityMonitor from having to be ref counted.
-class RegistrationTask : public Task {
- public:
-  RegistrationTask(ExtensionsActivityMonitor* monitor,
-                   MessageLoop* ui_loop,
-                   NotificationRegistrar* registrar)
-      : monitor_(monitor), ui_loop_(ui_loop), registrar_(registrar) {}
-  virtual ~RegistrationTask() {}
-
-  virtual void Run() {
-    DCHECK_EQ(MessageLoop::current(),
-              ChromeThread::GetMessageLoop(ChromeThread::UI));
-
-    // It would be nice if we could specify a Source for each specific function
-    // we wanted to observe, but the actual function objects are allocated on
-    // the fly so there is no reliable object to point to (same problem if we
-    // wanted to use the string name).  Thus, we use all sources and filter in
-    // Observe.
-    registrar_->Add(monitor_, NotificationType::EXTENSION_BOOKMARKS_API_INVOKED,
-                    NotificationService::AllSources());
-  }
-
- private:
-  ExtensionsActivityMonitor* monitor_;
-  MessageLoop* const ui_loop_;
-  NotificationRegistrar* registrar_;
-  DISALLOW_COPY_AND_ASSIGN(RegistrationTask);
-};
-}  // namespace
-
-ExtensionsActivityMonitor::ExtensionsActivityMonitor(MessageLoop* ui_loop)
-    : ui_loop_(ui_loop) {
-  ui_loop_->PostTask(FROM_HERE, new RegistrationTask(this, ui_loop,
-                                                     &registrar_));
-}
-
-ExtensionsActivityMonitor::~ExtensionsActivityMonitor() {
-  DCHECK_EQ(MessageLoop::current(), ui_loop_);
-  // The registrar calls RemoveAll in its dtor (which would happen in a moment)
-  // but explicitly call this so it is clear why we need to be on the ui_loop_.
-  registrar_.RemoveAll();
-}
-
-void ExtensionsActivityMonitor::GetAndClearRecords(Records* buffer) {
-  AutoLock lock(records_lock_);
-  buffer->clear();
-  buffer->swap(records_);
-}
-
-void ExtensionsActivityMonitor::PutRecords(const Records& records) {
-  AutoLock lock(records_lock_);
-  for (Records::const_iterator i = records.begin(); i != records.end(); ++i) {
-    records_[i->first].extension_id = i->second.extension_id;
-    records_[i->first].bookmark_write_count += i->second.bookmark_write_count;
-  }
-}
-
-void ExtensionsActivityMonitor::Observe(NotificationType type,
-                                        const NotificationSource& source,
-                                        const NotificationDetails& details) {
-  AutoLock lock(records_lock_);
-  DCHECK_EQ(MessageLoop::current(), ui_loop_);
-  const Extension* extension = Source<const Extension>(source).ptr();
-  const BookmarksFunction* f = Details<const BookmarksFunction>(details).ptr();
-  if (f->name() == "bookmarks.update" ||
-      f->name() == "bookmarks.move" ||
-      f->name() == "bookmarks.create" ||
-      f->name() == "bookmarks.removeTree" ||
-      f->name() == "bookmarks.remove") {
-    Record& record = records_[extension->id()];
-    record.extension_id = extension->id();
-    record.bookmark_write_count++;
-  }
-}
-
-}  // namespace browser_sync