[SystemInfo API] Rewrite storage info provider using storage monitor impl

chrome/browser/storage_monitor/storage_monitor_linux.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.
 
 // StorageMonitorLinux implementation.
 
 #include "chrome/browser/storage_monitor/storage_monitor_linux.h"
 
 #include <mntent.h>
 #include <stdio.h>
+#include <sys/vfs.h>
 
 #include <list>
 
 #include "base/basictypes.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "base/process.h"
 #include "base/process_util.h"
 #include "base/stl_util.h"
@@ skipping 265 matching lines @@
     scoped_refptr<base::MessageLoopProxy> loop_proxy =
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::FILE);
     media_transfer_protocol_manager_.reset(
         device::MediaTransferProtocolManager::Initialize(loop_proxy));
   }
 
   media_transfer_protocol_device_observer_.reset(
       new MediaTransferProtocolDeviceObserverLinux(receiver()));
 }
 
+std::vector<StorageInfo> StorageMonitorLinux::GetAllAvailableStorages() const {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  std::vector<StorageInfo> results;
+
+  for (MountMap::const_iterator it = mount_info_map_.begin();
+       it != mount_info_map_.end(); ++it)
+    results.push_back(it->second.storage_info);
+
+  return results;
+}
+
 bool StorageMonitorLinux::GetStorageInfoForPath(
     const base::FilePath& path,
     StorageInfo* device_info) const {
   DCHECK(device_info);
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // TODO(thestig) |media_transfer_protocol_device_observer_| should always be
   // valid.
   if (media_transfer_protocol_device_observer_ &&
       media_transfer_protocol_device_observer_->GetStorageInfoForPath(
@@ skipping 199 matching lines @@
   MountPointInfo mount_point_info;
   mount_point_info.mount_device = mount_device;
   mount_point_info.storage_info = *storage_info;
   mount_info_map_[mount_point] = mount_point_info;
   mount_priority_map_[mount_device][mount_point] = removable;
   if (removable)
     receiver()->ProcessAttach(*storage_info);
 }
 
 }  // namespace chrome