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

chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc

Index: chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
diff --git a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc b/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
deleted file mode 100644
index 12fdb71b76226f8185b6028eaeecc76f2af80074..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.cc
+++ /dev/null
@@ -1,105 +0,0 @@
-// 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.
-
-#include "chrome/browser/extensions/api/system_info_storage/storage_info_provider_linux.h"
-
-#include <mntent.h>
-#include <sys/vfs.h>
-
-namespace extensions {
-
-using api::experimental_system_info_storage::StorageUnitInfo;
-using api::experimental_system_info_storage::ParseStorageUnitType;
-using chrome::ScopedUdevDeviceObject;
-
-namespace {
-
-const char kMtabPath[] = "/etc/mtab";
-const char kDevPath[] = "/dev/";
-
-}  // namespace
-
-StorageInfoProviderLinux::StorageInfoProviderLinux()
-  : udev_context_(udev_new()),
-    mtab_file_path_(kMtabPath) {
-}
-
-StorageInfoProviderLinux::~StorageInfoProviderLinux() {}
-
-StorageInfoProviderLinux::StorageInfoProviderLinux(
-    const base::FilePath& mtab_path)
-    : udev_context_(udev_new()),
-      mtab_file_path_(mtab_path) {
-}
-
-bool StorageInfoProviderLinux::QueryInfo(StorageInfo* info) {
-  info->clear();
-  FILE* fp = setmntent(mtab_file_path_.value().c_str(), "r");
-  if (!fp) {
-    DPLOG(INFO) << "Failed to open " << kMtabPath;
-    return false;
-  }
-  struct mntent* p_mntent = NULL;
-  while ((p_mntent = getmntent(fp))) {
-    if (strncmp(p_mntent->mnt_fsname, kDevPath, strlen(kDevPath)) != 0)
-      continue;
-    linked_ptr<StorageUnitInfo> unit(new StorageUnitInfo());
-    if (QueryUnitInfo(p_mntent->mnt_dir, unit.get())) {
-        info->push_back(unit);
-    }
-  }
-  endmntent(fp);
-  return true;
-}
-
-bool StorageInfoProviderLinux::QueryUnitInfo(const std::string& mount_path,
-                                             StorageUnitInfo* info) {
-  std::string type;
-  if (!QueryStorageType(mount_path, &type))
-    return false;
-
-  struct statfs fs_info;
-  if (statfs(mount_path.c_str(), &fs_info) != 0) {
-    DPLOG(INFO) << "Failed to get filesystem information about " << mount_path;
-    return false;
-  }
-  // Currently the mount path is used as the identifier of a storage unit.
-  info->id = mount_path;
-  info->type = ParseStorageUnitType(type);
-  info->capacity = static_cast<double>(fs_info.f_blocks) * fs_info.f_bsize;
-  info->available_capacity =
-    static_cast<double>(fs_info.f_bavail) * fs_info.f_bsize;
-
-  return true;
-}
-
-bool StorageInfoProviderLinux::QueryStorageType(const std::string& mount_path,
-                                                std::string* type) {
-  struct stat stat_info;
-  if (stat(mount_path.c_str(), &stat_info) != 0) {
-    DPLOG(INFO) << "Failed to get information about " << mount_path;
-    return false;
-  }
-
-  // Create a udev device from a block device number.
-  ScopedUdevDeviceObject device(udev_device_new_from_devnum(
-        udev_context_, 'b', stat_info.st_dev));
-  if (!device)
-    return false;
-  if (GetUdevDevicePropertyValue(device, "ID_BUS") == "usb") {
-    *type = systeminfo::kStorageTypeRemovable;
-  } else if (GetUdevDevicePropertyValue(device, "ID_TYPE") == "disk") {
-    *type = systeminfo::kStorageTypeFixed;
-  } else {
-    *type = systeminfo::kStorageTypeUnknown;
-  }
-  return true;
-}
-
-// static
-StorageInfoProvider* StorageInfoProvider::Get() {
-  return StorageInfoProvider::GetInstance<StorageInfoProviderLinux>();
-}
-
-}  // namespace extensions