[CrOS] Enumerate existing mount points and check for media devices.

chrome/browser/media_gallery/media_device_notifications_chromeos.cc

 // 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.
 
 // chromeos::MediaDeviceNotifications implementation.
 
 #include "chrome/browser/media_gallery/media_device_notifications_chromeos.h"
 
 #include "base/file_path.h"
 #include "base/logging.h"
@@ skipping 16 matching lines @@
   return it == disks.end() ? std::string() : it->second->fs_uuid();
 }
 
 }  // namespace
 
 using content::BrowserThread;
 
 MediaDeviceNotifications::MediaDeviceNotifications() {
   DCHECK(disks::DiskMountManager::GetInstance());
   disks::DiskMountManager::GetInstance()->AddObserver(this);
+  CheckExistingMountPointsOnUIThread();
 }
 
 MediaDeviceNotifications::~MediaDeviceNotifications() {
   disks::DiskMountManager* manager = disks::DiskMountManager::GetInstance();
   if (manager) {
     manager->RemoveObserver(this);
   }
 }
 
+void MediaDeviceNotifications::CheckExistingMountPointsOnUIThread() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  const disks::DiskMountManager::MountPointMap& mount_point_map =
+      disks::DiskMountManager::GetInstance()->mount_points();
+  for (disks::DiskMountManager::MountPointMap::const_iterator it =
+           mount_point_map.begin(); it != mount_point_map.end(); ++it) {
+    BrowserThread::PostTask(
+        BrowserThread::FILE, FROM_HERE,
+        base::Bind(&MediaDeviceNotifications::CheckMountedPathOnFileThread,
+                   this, it->second));
+  }
+}
+
 void MediaDeviceNotifications::DiskChanged(
     disks::DiskMountManagerEventType event,
     const disks::DiskMountManager::Disk* disk) {
 }
 
 void MediaDeviceNotifications::DeviceChanged(
     disks::DiskMountManagerEventType event,
     const std::string& device_path) {
 }
 
@@ skipping 69 matching lines @@
 
   mount_map_.insert(std::make_pair(mount_info.mount_path, device_id_str));
   base::SystemMonitor::Get()->ProcessMediaDeviceAttached(
       device_id_str,
       UTF8ToUTF16(FilePath(mount_info.source_path).BaseName().value()),
       base::SystemMonitor::TYPE_PATH,
       mount_info.mount_path);
 }
 
 }  // namespace chrome