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

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

Index: chrome/browser/extensions/api/system_info_storage/storage_info_provider_mac.cc
diff --git a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_mac.cc b/chrome/browser/extensions/api/system_info_storage/storage_info_provider_mac.cc
deleted file mode 100644
index 125152bd8bcfcd2988cade99876853e892652be0..0000000000000000000000000000000000000000
--- a/chrome/browser/extensions/api/system_info_storage/storage_info_provider_mac.cc
+++ /dev/null
@@ -1,143 +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.h"
-
-#include <CoreFoundation/CoreFoundation.h>
-#include <IOKit/IOBSD.h>
-#include <IOKit/IOKitLib.h>
-#include <IOKit/storage/IOMedia.h>
-#include <IOKit/storage/IOMediaBSDClient.h>
-#include <paths.h>
-#include <sys/mount.h>
-#include <sys/param.h>
-#include <sys/ucred.h>
-
-#include <map>
-
-#include "base/mac/foundation_util.h"
-#include "base/mac/scoped_cftyperef.h"
-#include "base/mac/scoped_ioobject.h"
-#include "base/strings/sys_string_conversions.h"
-
-namespace extensions {
-
-namespace {
-
-using api::experimental_system_info_storage::StorageUnitInfo;
-
-// StorageInfoProvider implementation on MacOS platform.
-class StorageInfoProviderMac : public StorageInfoProvider {
- public:
-  StorageInfoProviderMac() {}
-
-  virtual bool QueryInfo(StorageInfo* info) OVERRIDE;
-  virtual bool QueryUnitInfo(const std::string& id,
-                             StorageUnitInfo* info) OVERRIDE;
-
- private:
-  virtual ~StorageInfoProviderMac() {}
-  void BuildStorageTypeMap();
-  std::map<std::string, std::string> dev_path_to_type_map_;
-};
-
-bool StorageInfoProviderMac::QueryInfo(StorageInfo* info) {
-  info->clear();
-
-  struct statfs* mounted_volumes;
-  int num_volumes = getmntinfo(&mounted_volumes, 0);
-  if (num_volumes == 0)
-    return false;
-
-  BuildStorageTypeMap();
-
-  for (int i = 0; i < num_volumes; ++i) {
-    // Skip volumes which aren't displayed in the Finder
-    if (mounted_volumes[i].f_flags & MNT_DONTBROWSE)
-      continue;
-
-    linked_ptr<StorageUnitInfo> unit(new StorageUnitInfo());
-    if (QueryUnitInfo(mounted_volumes[i].f_mntonname, unit.get()))
-      info->push_back(unit);
-  }
-  return true;
-}
-
-bool StorageInfoProviderMac::QueryUnitInfo(const std::string& id,
-                                           StorageUnitInfo* info) {
-  struct statfs volume_info;
-  if (statfs(id.c_str(), &volume_info) != 0)
-    return false;
-
-  std::string volume_dev(volume_info.f_mntfromname);
-  int32 block_size = volume_info.f_bsize;
-  info->id = id;
-  std::string type = dev_path_to_type_map_[volume_dev];
-  if (type.empty()) {
-    BuildStorageTypeMap();
-    type = dev_path_to_type_map_[volume_dev].empty() ?
-        systeminfo::kStorageTypeUnknown : dev_path_to_type_map_[volume_dev];
-  }
-  info->type =
-      api::experimental_system_info_storage::ParseStorageUnitType(type);
-  // TODO(joshuagl): we're reporting different values than Disk Utility.
-  // Is there an alternative API to get this information that doesn't use
-  // statfs? NSFileManager's attributesOfFileSystemForPath uses statfs.
-  info->capacity = volume_info.f_blocks * block_size;
-  info->available_capacity = volume_info.f_bfree * block_size;
-  return true;
-}
-
-void StorageInfoProviderMac::BuildStorageTypeMap() {
-  io_iterator_t media_iterator;
-  kern_return_t retval;
-
-  retval = IOServiceGetMatchingServices(kIOMasterPortDefault,
-                                        IOServiceMatching(kIOMediaClass),
-                                        &media_iterator);
-  if (retval != KERN_SUCCESS)
-    return;
-
-  base::mac::ScopedIOObject<io_iterator_t> iterator(media_iterator);
-  media_iterator = IO_OBJECT_NULL;
-
-  for (base::mac::ScopedIOObject<io_service_t> media(IOIteratorNext(iterator));
-       media;
-       media.reset(IOIteratorNext(iterator))) {
-    base::mac::ScopedCFTypeRef<CFTypeRef> dev_path_cf(
-        IORegistryEntryCreateCFProperty(media,
-                                        CFSTR(kIOBSDNameKey),
-                                        kCFAllocatorDefault,
-                                        0));
-
-    if (!dev_path_cf)
-      continue;
-
-    std::string dev_path(_PATH_DEV);
-    dev_path.append(
-        base::SysCFStringRefToUTF8(
-            base::mac::CFCast<CFStringRef>(dev_path_cf)));
-
-    base::mac::ScopedCFTypeRef<CFTypeRef> removable_cf(
-        IORegistryEntryCreateCFProperty(media,
-                                        CFSTR(kIOMediaEjectableKey),
-                                        kCFAllocatorDefault,
-                                        0));
-    if (!removable_cf)
-      dev_path_to_type_map_[dev_path] = systeminfo::kStorageTypeUnknown;
-    else if (CFBooleanGetValue(base::mac::CFCast<CFBooleanRef>(removable_cf)))
-      dev_path_to_type_map_[dev_path] = systeminfo::kStorageTypeRemovable;
-    else
-      dev_path_to_type_map_[dev_path] =  systeminfo::kStorageTypeFixed;
-  }
-}
-
-}  // namespace
-
-// static
-StorageInfoProvider* StorageInfoProvider::Get() {
-  return StorageInfoProvider::GetInstance<StorageInfoProviderMac>();
-}
-
-}  // namespace extensions