Move storage-related files from webkit/ to new top-level directory storage/

storage/browser/fileapi/sandbox_directory_database.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.
 
-#include "webkit/browser/fileapi/sandbox_directory_database.h"
+#include "storage/browser/fileapi/sandbox_directory_database.h"
 
 #include <math.h>
 #include <algorithm>
 #include <set>
 #include <stack>
 
 #include "base/file_util.h"
 #include "base/files/file_enumerator.h"
 #include "base/location.h"
 #include "base/metrics/histogram.h"
 #include "base/pickle.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "third_party/leveldatabase/src/include/leveldb/db.h"
 #include "third_party/leveldatabase/src/include/leveldb/write_batch.h"
-#include "webkit/browser/fileapi/file_system_usage_cache.h"
-#include "webkit/common/fileapi/file_system_util.h"
+#include "storage/browser/fileapi/file_system_usage_cache.h"
+#include "storage/common/fileapi/file_system_util.h"
 
 namespace {
 
-bool PickleFromFileInfo(
-    const fileapi::SandboxDirectoryDatabase::FileInfo& info,
-    Pickle* pickle) {
+bool PickleFromFileInfo(const storage::SandboxDirectoryDatabase::FileInfo& info,
+                        Pickle* pickle) {
   DCHECK(pickle);
   std::string data_path;
   // Round off here to match the behavior of the filesystem on real files.
   base::Time time =
       base::Time::FromDoubleT(floor(info.modification_time.ToDoubleT()));
   std::string name;
 
-  data_path = fileapi::FilePathToString(info.data_path);
-  name = fileapi::FilePathToString(base::FilePath(info.name));
+  data_path = storage::FilePathToString(info.data_path);
+  name = storage::FilePathToString(base::FilePath(info.name));
 
-  if (pickle->WriteInt64(info.parent_id) &&
-      pickle->WriteString(data_path) &&
-      pickle->WriteString(name) &&
-      pickle->WriteInt64(time.ToInternalValue()))
+  if (pickle->WriteInt64(info.parent_id) && pickle->WriteString(data_path) &&
+      pickle->WriteString(name) && pickle->WriteInt64(time.ToInternalValue()))
     return true;
 
   NOTREACHED();
   return false;
 }
 
-bool FileInfoFromPickle(
-    const Pickle& pickle,
-    fileapi::SandboxDirectoryDatabase::FileInfo* info) {
+bool FileInfoFromPickle(const Pickle& pickle,
+                        storage::SandboxDirectoryDatabase::FileInfo* info) {
   PickleIterator iter(pickle);
   std::string data_path;
   std::string name;
   int64 internal_time;
 
   if (pickle.ReadInt64(&iter, &info->parent_id) &&
-      pickle.ReadString(&iter, &data_path) &&
-      pickle.ReadString(&iter, &name) &&
+      pickle.ReadString(&iter, &data_path) && pickle.ReadString(&iter, &name) &&
       pickle.ReadInt64(&iter, &internal_time)) {
-    info->data_path = fileapi::StringToFilePath(data_path);
-    info->name = fileapi::StringToFilePath(name).value();
+    info->data_path = storage::StringToFilePath(data_path);
+    info->name = storage::StringToFilePath(name).value();
     info->modification_time = base::Time::FromInternalValue(internal_time);
     return true;
   }
   LOG(ERROR) << "Pickle could not be digested!";
   return false;
 }
 
 const base::FilePath::CharType kDirectoryDatabaseName[] =
     FILE_PATH_LITERAL("Paths");
 const char kChildLookupPrefix[] = "CHILD_OF:";
 const char kChildLookupSeparator[] = ":";
 const char kLastFileIdKey[] = "LAST_FILE_ID";
 const char kLastIntegerKey[] = "LAST_INTEGER";
 const int64 kMinimumReportIntervalHours = 1;
 const char kInitStatusHistogramLabel[] = "FileSystem.DirectoryDatabaseInit";
 const char kDatabaseRepairHistogramLabel[] =
     "FileSystem.DirectoryDatabaseRepair";
 
 enum InitStatus {
   INIT_STATUS_OK = 0,
   INIT_STATUS_CORRUPTION,
   INIT_STATUS_IO_ERROR,
   INIT_STATUS_UNKNOWN_ERROR,
   INIT_STATUS_MAX
 };
 
-enum RepairResult {
-  DB_REPAIR_SUCCEEDED = 0,
-  DB_REPAIR_FAILED,
-  DB_REPAIR_MAX
-};
+enum RepairResult { DB_REPAIR_SUCCEEDED = 0, DB_REPAIR_FAILED, DB_REPAIR_MAX };
 
 std::string GetChildLookupKey(
-    fileapi::SandboxDirectoryDatabase::FileId parent_id,
+    storage::SandboxDirectoryDatabase::FileId parent_id,
     const base::FilePath::StringType& child_name) {
   std::string name;
-  name = fileapi::FilePathToString(base::FilePath(child_name));
+  name = storage::FilePathToString(base::FilePath(child_name));
   return std::string(kChildLookupPrefix) + base::Int64ToString(parent_id) +
-      std::string(kChildLookupSeparator) + name;
+         std::string(kChildLookupSeparator) + name;
 }
 
 std::string GetChildListingKeyPrefix(
-    fileapi::SandboxDirectoryDatabase::FileId parent_id) {
+    storage::SandboxDirectoryDatabase::FileId parent_id) {
   return std::string(kChildLookupPrefix) + base::Int64ToString(parent_id) +
-      std::string(kChildLookupSeparator);
+         std::string(kChildLookupSeparator);
 }
 
 const char* LastFileIdKey() {
   return kLastFileIdKey;
 }
 
 const char* LastIntegerKey() {
   return kLastIntegerKey;
 }
 
 std::string GetFileLookupKey(
-    fileapi::SandboxDirectoryDatabase::FileId file_id) {
+    storage::SandboxDirectoryDatabase::FileId file_id) {
   return base::Int64ToString(file_id);
 }
 
 // Assumptions:
 //  - Any database entry is one of:
 //    - ("CHILD_OF:|parent_id|:<name>", "|file_id|"),
 //    - ("LAST_FILE_ID", "|last_file_id|"),
 //    - ("LAST_INTEGER", "|last_integer|"),
 //    - ("|file_id|", "pickled FileInfo")
 //        where FileInfo has |parent_id|, |data_path|, |name| and
 //        |modification_time|,
 // Constraints:
 //  - Each file in the database has unique backing file.
 //  - Each file in |filesystem_data_directory_| has a database entry.
 //  - Directory structure is tree, i.e. connected and acyclic.
 class DatabaseCheckHelper {
  public:
-  typedef fileapi::SandboxDirectoryDatabase::FileId FileId;
-  typedef fileapi::SandboxDirectoryDatabase::FileInfo FileInfo;
+  typedef storage::SandboxDirectoryDatabase::FileId FileId;
+  typedef storage::SandboxDirectoryDatabase::FileInfo FileInfo;
 
-  DatabaseCheckHelper(fileapi::SandboxDirectoryDatabase* dir_db,
+  DatabaseCheckHelper(storage::SandboxDirectoryDatabase* dir_db,
                       leveldb::DB* db,
                       const base::FilePath& path);
 
   bool IsFileSystemConsistent() {
     return IsDatabaseEmpty() ||
-        (ScanDatabase() && ScanDirectory() && ScanHierarchy());
+           (ScanDatabase() && ScanDirectory() && ScanHierarchy());
   }
 
  private:
   bool IsDatabaseEmpty();
   // These 3 methods need to be called in the order.  Each method requires its
   // previous method finished successfully. They also require the database is
   // not empty.
   bool ScanDatabase();
   bool ScanDirectory();
   bool ScanHierarchy();
 
-  fileapi::SandboxDirectoryDatabase* dir_db_;
+  storage::SandboxDirectoryDatabase* dir_db_;
   leveldb::DB* db_;
   base::FilePath path_;
 
   std::set<base::FilePath> files_in_db_;
 
   size_t num_directories_in_db_;
   size_t num_files_in_db_;
   size_t num_hierarchy_links_in_db_;
 
   FileId last_file_id_;
   FileId last_integer_;
 };
 
 DatabaseCheckHelper::DatabaseCheckHelper(
-    fileapi::SandboxDirectoryDatabase* dir_db,
+    storage::SandboxDirectoryDatabase* dir_db,
     leveldb::DB* db,
     const base::FilePath& path)
-    : dir_db_(dir_db), db_(db), path_(path),
+    : dir_db_(dir_db),
+      db_(db),
+      path_(path),
       num_directories_in_db_(0),
       num_files_in_db_(0),
       num_hierarchy_links_in_db_(0),
-      last_file_id_(-1), last_integer_(-1) {
+      last_file_id_(-1),
+      last_integer_(-1) {
   DCHECK(dir_db_);
   DCHECK(db_);
   DCHECK(!path_.empty() && base::DirectoryExists(path_));
 }
 
 bool DatabaseCheckHelper::IsDatabaseEmpty() {
   scoped_ptr<leveldb::Iterator> itr(db_->NewIterator(leveldb::ReadOptions()));
   itr->SeekToFirst();
   return !itr->Valid();
 }
@@ skipping 23 matching lines @@
     } else if (key == kLastIntegerKey) {
       // key: "LAST_INTEGER"
       // value: "<last_integer>"
       if (last_integer_ >= 0 ||
           !base::StringToInt64(itr->value().ToString(), &last_integer_))
         return false;
     } else {
       // key: "<entry_id>"
       // value: "<pickled FileInfo>"
       FileInfo file_info;
-      if (!FileInfoFromPickle(
-              Pickle(itr->value().data(), itr->value().size()), &file_info))
+      if (!FileInfoFromPickle(Pickle(itr->value().data(), itr->value().size()),
+                              &file_info))
         return false;
 
       FileId file_id = -1;
       if (!base::StringToInt64(key, &file_id) || file_id < 0)
         return false;
 
       if (max_file_id < file_id)
         max_file_id = file_id;
       if (!file_ids.insert(file_id).second)
         return false;
 
       if (file_info.is_directory()) {
         ++num_directories_in_db_;
         DCHECK(file_info.data_path.empty());
       } else {
         // Ensure any pair of file entry don't share their data_path.
         if (!files_in_db_.insert(file_info.data_path).second)
           return false;
 
         // Ensure the backing file exists as a normal file.
         base::File::Info platform_file_info;
-        if (!base::GetFileInfo(
-                path_.Append(file_info.data_path), &platform_file_info) ||
+        if (!base::GetFileInfo(path_.Append(file_info.data_path),
+                               &platform_file_info) ||
             platform_file_info.is_directory ||
             platform_file_info.is_symbolic_link) {
           // leveldb::Iterator iterates a snapshot of the database.
           // So even after RemoveFileInfo() call, we'll visit hierarchy link
           // from |parent_id| to |file_id|.
           if (!dir_db_->RemoveFileInfo(file_id))
             return false;
           --num_hierarchy_links_in_db_;
           files_in_db_.erase(file_info.data_path);
         } else {
           ++num_files_in_db_;
         }
       }
     }
   }
 
   // TODO(tzik): Add constraint for |last_integer_| to avoid possible
   // data path confliction on ObfuscatedFileUtil.
   return max_file_id <= last_file_id_;
 }
 
 bool DatabaseCheckHelper::ScanDirectory() {
   // TODO(kinuko): Scans all local file system entries to verify each of them
   // has a database entry.
   const base::FilePath kExcludes[] = {
-    base::FilePath(kDirectoryDatabaseName),
-    base::FilePath(fileapi::FileSystemUsageCache::kUsageFileName),
+      base::FilePath(kDirectoryDatabaseName),
+      base::FilePath(storage::FileSystemUsageCache::kUsageFileName),
   };
 
   // Any path in |pending_directories| is relative to |path_|.
   std::stack<base::FilePath> pending_directories;
   pending_directories.push(base::FilePath());
 
   while (!pending_directories.empty()) {
     base::FilePath dir_path = pending_directories.top();
     pending_directories.pop();
 
     base::FileEnumerator file_enum(
         dir_path.empty() ? path_ : path_.Append(dir_path),
         false /* not recursive */,
         base::FileEnumerator::DIRECTORIES | base::FileEnumerator::FILES);
 
     base::FilePath absolute_file_path;
     while (!(absolute_file_path = file_enum.Next()).empty()) {
       base::FileEnumerator::FileInfo find_info = file_enum.GetInfo();
 
       base::FilePath relative_file_path;
       if (!path_.AppendRelativePath(absolute_file_path, &relative_file_path))
         return false;
 
-      if (std::find(kExcludes, kExcludes + arraysize(kExcludes),
+      if (std::find(kExcludes,
+                    kExcludes + arraysize(kExcludes),
                     relative_file_path) != kExcludes + arraysize(kExcludes))
         continue;
 
       if (find_info.IsDirectory()) {
         pending_directories.push(relative_file_path);
         continue;
       }
 
       // Check if the file has a database entry.
       std::set<base::FilePath>::iterator itr =
@@ skipping 15 matching lines @@
   size_t visited_files = 0;
   size_t visited_links = 0;
 
   std::stack<FileId> directories;
   directories.push(0);
 
   // Check if the root directory exists as a directory.
   FileInfo file_info;
   if (!dir_db_->GetFileInfo(0, &file_info))
     return false;
-  if (file_info.parent_id != 0 ||
-      !file_info.is_directory())
+  if (file_info.parent_id != 0 || !file_info.is_directory())
     return false;
 
   while (!directories.empty()) {
     ++visited_directories;
     FileId dir_id = directories.top();
     directories.pop();
 
     std::vector<FileId> children;
     if (!dir_db_->ListChildren(dir_id, &children))
       return false;
@@ skipping 20 matching lines @@
       if (file_info.is_directory())
         directories.push(*itr);
       else
         ++visited_files;
       ++visited_links;
     }
   }
 
   // Check if we've visited all database entries.
   return num_directories_in_db_ == visited_directories &&
-      num_files_in_db_ == visited_files &&
-      num_hierarchy_links_in_db_ == visited_links;
+         num_files_in_db_ == visited_files &&
+         num_hierarchy_links_in_db_ == visited_links;
 }
 
 // Returns true if the given |data_path| contains no parent references ("..")
 // and does not refer to special system files.
 // This is called in GetFileInfo, AddFileInfo and UpdateFileInfo to
 // ensure we're only dealing with valid data paths.
 bool VerifyDataPath(const base::FilePath& data_path) {
   // |data_path| should not contain any ".." and should be a relative path
   // (to the filesystem_data_directory_).
   if (data_path.ReferencesParent() || data_path.IsAbsolute())
     return false;
   // See if it's not pointing to the special system paths.
   const base::FilePath kExcludes[] = {
-    base::FilePath(kDirectoryDatabaseName),
-    base::FilePath(fileapi::FileSystemUsageCache::kUsageFileName),
+      base::FilePath(kDirectoryDatabaseName),
+      base::FilePath(storage::FileSystemUsageCache::kUsageFileName),
   };
   for (size_t i = 0; i < arraysize(kExcludes); ++i) {
     if (data_path == kExcludes[i] || kExcludes[i].IsParent(data_path))
       return false;
   }
   return true;
 }
 
 }  // namespace
 
-namespace fileapi {
+namespace storage {
 
 SandboxDirectoryDatabase::FileInfo::FileInfo() : parent_id(0) {
 }
 
 SandboxDirectoryDatabase::FileInfo::~FileInfo() {
 }
 
 SandboxDirectoryDatabase::SandboxDirectoryDatabase(
     const base::FilePath& filesystem_data_directory,
     leveldb::Env* env_override)
@@ skipping 21 matching lines @@
     if (!base::StringToInt64(child_id_string, child_id)) {
       LOG(ERROR) << "Hit database corruption!";
       return false;
     }
     return true;
   }
   HandleError(FROM_HERE, status);
   return false;
 }
 
-bool SandboxDirectoryDatabase::GetFileWithPath(
-    const base::FilePath& path, FileId* file_id) {
+bool SandboxDirectoryDatabase::GetFileWithPath(const base::FilePath& path,
+                                               FileId* file_id) {
   std::vector<base::FilePath::StringType> components;
   VirtualPath::GetComponents(path, &components);
   FileId local_id = 0;
   std::vector<base::FilePath::StringType>::iterator iter;
   for (iter = components.begin(); iter != components.end(); ++iter) {
     base::FilePath::StringType name;
     name = *iter;
     if (name == FILE_PATH_LITERAL("/"))
       continue;
     if (!GetChildWithName(local_id, name, &local_id))
       return false;
   }
   *file_id = local_id;
   return true;
 }
 
-bool SandboxDirectoryDatabase::ListChildren(
-    FileId parent_id, std::vector<FileId>* children) {
+bool SandboxDirectoryDatabase::ListChildren(FileId parent_id,
+                                            std::vector<FileId>* children) {
   // Check to add later: fail if parent is a file, at least in debug builds.
   if (!Init(REPAIR_ON_CORRUPTION))
     return false;
   DCHECK(children);
   std::string child_key_prefix = GetChildListingKeyPrefix(parent_id);
 
   scoped_ptr<leveldb::Iterator> iter(db_->NewIterator(leveldb::ReadOptions()));
   iter->Seek(child_key_prefix);
   children->clear();
   while (iter->Valid() &&
-      StartsWithASCII(iter->key().ToString(), child_key_prefix, true)) {
+         StartsWithASCII(iter->key().ToString(), child_key_prefix, true)) {
     std::string child_id_string = iter->value().ToString();
     FileId child_id;
     if (!base::StringToInt64(child_id_string, &child_id)) {
       LOG(ERROR) << "Hit database corruption!";
       return false;
     }
     children->push_back(child_id);
     iter->Next();
   }
   return true;
@@ skipping 26 matching lines @@
     info->name = base::FilePath::StringType();
     info->data_path = base::FilePath();
     info->modification_time = base::Time::Now();
     info->parent_id = 0;
     return true;
   }
   HandleError(FROM_HERE, status);
   return false;
 }
 
-base::File::Error SandboxDirectoryDatabase::AddFileInfo(
-    const FileInfo& info, FileId* file_id) {
+base::File::Error SandboxDirectoryDatabase::AddFileInfo(const FileInfo& info,
+                                                        FileId* file_id) {
   if (!Init(REPAIR_ON_CORRUPTION))
     return base::File::FILE_ERROR_FAILED;
   DCHECK(file_id);
   std::string child_key = GetChildLookupKey(info.parent_id, info.name);
   std::string child_id_string;
   leveldb::Status status =
       db_->Get(leveldb::ReadOptions(), child_key, &child_id_string);
   if (status.ok()) {
     LOG(ERROR) << "File exists already!";
     return base::File::FILE_ERROR_EXISTS;
@@ skipping 37 matching lines @@
   if (!RemoveFileInfoHelper(file_id, &batch))
     return false;
   leveldb::Status status = db_->Write(leveldb::WriteOptions(), &batch);
   if (!status.ok()) {
     HandleError(FROM_HERE, status);
     return false;
   }
   return true;
 }
 
-bool SandboxDirectoryDatabase::UpdateFileInfo(
-    FileId file_id, const FileInfo& new_info) {
+bool SandboxDirectoryDatabase::UpdateFileInfo(FileId file_id,
+                                              const FileInfo& new_info) {
   // TODO(ericu): We should also check to see that this doesn't create a loop,
   // but perhaps only in a debug build.
   if (!Init(REPAIR_ON_CORRUPTION))
     return false;
   DCHECK(file_id);  // You can't remove the root, ever.  Just delete the DB.
   FileInfo old_info;
   if (!GetFileInfo(file_id, &old_info))
     return false;
   if (old_info.parent_id != new_info.parent_id &&
       !IsDirectory(new_info.parent_id))
@@ skipping 13 matching lines @@
     return false;
   leveldb::Status status = db_->Write(leveldb::WriteOptions(), &batch);
   if (!status.ok()) {
     HandleError(FROM_HERE, status);
     return false;
   }
   return true;
 }
 
 bool SandboxDirectoryDatabase::UpdateModificationTime(
-    FileId file_id, const base::Time& modification_time) {
+    FileId file_id,
+    const base::Time& modification_time) {
   FileInfo info;
   if (!GetFileInfo(file_id, &info))
     return false;
   info.modification_time = modification_time;
   Pickle pickle;
   if (!PickleFromFileInfo(info, &pickle))
     return false;
-  leveldb::Status status = db_->Put(
-      leveldb::WriteOptions(),
-      GetFileLookupKey(file_id),
-      leveldb::Slice(reinterpret_cast<const char *>(pickle.data()),
-                     pickle.size()));
+  leveldb::Status status =
+      db_->Put(leveldb::WriteOptions(),
+               GetFileLookupKey(file_id),
+               leveldb::Slice(reinterpret_cast<const char*>(pickle.data()),
+                              pickle.size()));
   if (!status.ok()) {
     HandleError(FROM_HERE, status);
     return false;
   }
   return true;
 }
 
-bool SandboxDirectoryDatabase::OverwritingMoveFile(
-    FileId src_file_id, FileId dest_file_id) {
+bool SandboxDirectoryDatabase::OverwritingMoveFile(FileId src_file_id,
+                                                   FileId dest_file_id) {
   FileInfo src_file_info;
   FileInfo dest_file_info;
 
   if (!GetFileInfo(src_file_id, &src_file_info))
     return false;
   if (!GetFileInfo(dest_file_id, &dest_file_info))
     return false;
   if (src_file_info.is_directory() || dest_file_info.is_directory())
     return false;
   leveldb::WriteBatch batch;
   // This is the only field that really gets moved over; if you add fields to
   // FileInfo, e.g. ctime, they might need to be copied here.
   dest_file_info.data_path = src_file_info.data_path;
   if (!RemoveFileInfoHelper(src_file_id, &batch))
     return false;
   Pickle pickle;
   if (!PickleFromFileInfo(dest_file_info, &pickle))
     return false;
-  batch.Put(
-      GetFileLookupKey(dest_file_id),
-      leveldb::Slice(reinterpret_cast<const char *>(pickle.data()),
-                     pickle.size()));
+  batch.Put(GetFileLookupKey(dest_file_id),
+            leveldb::Slice(reinterpret_cast<const char*>(pickle.data()),
+                           pickle.size()));
   leveldb::Status status = db_->Write(leveldb::WriteOptions(), &batch);
   if (!status.ok()) {
     HandleError(FROM_HERE, status);
     return false;
   }
   return true;
 }
 
 bool SandboxDirectoryDatabase::GetNextInteger(int64* next) {
   if (!Init(REPAIR_ON_CORRUPTION))
     return false;
   DCHECK(next);
   std::string int_string;
   leveldb::Status status =
       db_->Get(leveldb::ReadOptions(), LastIntegerKey(), &int_string);
   if (status.ok()) {
     int64 temp;
     if (!base::StringToInt64(int_string, &temp)) {
       LOG(ERROR) << "Hit database corruption!";
       return false;
     }
     ++temp;
-    status = db_->Put(leveldb::WriteOptions(), LastIntegerKey(),
-        base::Int64ToString(temp));
+    status = db_->Put(
+        leveldb::WriteOptions(), LastIntegerKey(), base::Int64ToString(temp));
     if (!status.ok()) {
       HandleError(FROM_HERE, status);
       return false;
     }
     *next = temp;
     return true;
   }
   if (!status.IsNotFound()) {
     HandleError(FROM_HERE, status);
     return false;
   }
   // The database must not yet exist; initialize it.
   if (!StoreDefaultValues())
     return false;
 
   return GetNextInteger(next);
 }
 
 // static
 bool SandboxDirectoryDatabase::DestroyDatabase(const base::FilePath& path,
                                                leveldb::Env* env_override) {
-  std::string name  = FilePathToString(path.Append(kDirectoryDatabaseName));
+  std::string name = FilePathToString(path.Append(kDirectoryDatabaseName));
   leveldb::Options options;
   if (env_override)
     options.env = env_override;
   leveldb::Status status = leveldb::DestroyDB(name, options);
   if (status.ok())
     return true;
-  LOG(WARNING) << "Failed to destroy a database with status " <<
-      status.ToString();
+  LOG(WARNING) << "Failed to destroy a database with status "
+               << status.ToString();
   return false;
 }
 
 bool SandboxDirectoryDatabase::Init(RecoveryOption recovery_option) {
   if (db_)
     return true;
 
-  std::string path =
-      FilePathToString(filesystem_data_directory_.Append(
-          kDirectoryDatabaseName));
+  std::string path = FilePathToString(
+      filesystem_data_directory_.Append(kDirectoryDatabaseName));
   leveldb::Options options;
   options.max_open_files = 0;  // Use minimum.
   options.create_if_missing = true;
   if (env_override_)
     options.env = env_override_;
   leveldb::DB* db;
   leveldb::Status status = leveldb::DB::Open(options, path, &db);
   ReportInitStatus(status);
   if (status.ok()) {
     db_.reset(db);
     return true;
   }
   HandleError(FROM_HERE, status);
 
   // Corruption due to missing necessary MANIFEST-* file causes IOError instead
   // of Corruption error.
   // Try to repair database even when IOError case.
   if (!status.IsCorruption() && !status.IsIOError())
     return false;
 
   switch (recovery_option) {
     case FAIL_ON_CORRUPTION:
       return false;
     case REPAIR_ON_CORRUPTION:
       LOG(WARNING) << "Corrupted SandboxDirectoryDatabase detected."
                    << " Attempting to repair.";
       if (RepairDatabase(path)) {
-        UMA_HISTOGRAM_ENUMERATION(kDatabaseRepairHistogramLabel,
-                                  DB_REPAIR_SUCCEEDED, DB_REPAIR_MAX);
+        UMA_HISTOGRAM_ENUMERATION(
+            kDatabaseRepairHistogramLabel, DB_REPAIR_SUCCEEDED, DB_REPAIR_MAX);
         return true;
       }
-      UMA_HISTOGRAM_ENUMERATION(kDatabaseRepairHistogramLabel,
-                                DB_REPAIR_FAILED, DB_REPAIR_MAX);
+      UMA_HISTOGRAM_ENUMERATION(
+          kDatabaseRepairHistogramLabel, DB_REPAIR_FAILED, DB_REPAIR_MAX);
       LOG(WARNING) << "Failed to repair SandboxDirectoryDatabase.";
-      // fall through
+    // fall through
     case DELETE_ON_CORRUPTION:
       LOG(WARNING) << "Clearing SandboxDirectoryDatabase.";
       if (!base::DeleteFile(filesystem_data_directory_, true))
         return false;
       if (!base::CreateDirectory(filesystem_data_directory_))
         return false;
       return Init(FAIL_ON_CORRUPTION);
   }
 
   NOTREACHED();
@@ skipping 27 matching lines @@
   return true;
 }
 
 bool SandboxDirectoryDatabase::IsFileSystemConsistent() {
   if (!Init(FAIL_ON_CORRUPTION))
     return false;
   DatabaseCheckHelper helper(this, db_.get(), filesystem_data_directory_);
   return helper.IsFileSystemConsistent();
 }
 
-void SandboxDirectoryDatabase::ReportInitStatus(
-    const leveldb::Status& status) {
+void SandboxDirectoryDatabase::ReportInitStatus(const leveldb::Status& status) {
   base::Time now = base::Time::Now();
   const base::TimeDelta minimum_interval =
       base::TimeDelta::FromHours(kMinimumReportIntervalHours);
   if (last_reported_time_ + minimum_interval >= now)
     return;
   last_reported_time_ = now;
 
   if (status.ok()) {
-    UMA_HISTOGRAM_ENUMERATION(kInitStatusHistogramLabel,
-                              INIT_STATUS_OK, INIT_STATUS_MAX);
+    UMA_HISTOGRAM_ENUMERATION(
+        kInitStatusHistogramLabel, INIT_STATUS_OK, INIT_STATUS_MAX);
   } else if (status.IsCorruption()) {
-    UMA_HISTOGRAM_ENUMERATION(kInitStatusHistogramLabel,
-                              INIT_STATUS_CORRUPTION, INIT_STATUS_MAX);
+    UMA_HISTOGRAM_ENUMERATION(
+        kInitStatusHistogramLabel, INIT_STATUS_CORRUPTION, INIT_STATUS_MAX);
   } else if (status.IsIOError()) {
-    UMA_HISTOGRAM_ENUMERATION(kInitStatusHistogramLabel,
-                              INIT_STATUS_IO_ERROR, INIT_STATUS_MAX);
+    UMA_HISTOGRAM_ENUMERATION(
+        kInitStatusHistogramLabel, INIT_STATUS_IO_ERROR, INIT_STATUS_MAX);
   } else {
-    UMA_HISTOGRAM_ENUMERATION(kInitStatusHistogramLabel,
-                              INIT_STATUS_UNKNOWN_ERROR, INIT_STATUS_MAX);
+    UMA_HISTOGRAM_ENUMERATION(
+        kInitStatusHistogramLabel, INIT_STATUS_UNKNOWN_ERROR, INIT_STATUS_MAX);
   }
 }
 
 bool SandboxDirectoryDatabase::StoreDefaultValues() {
   // Verify that this is a totally new database, and initialize it.
   scoped_ptr<leveldb::Iterator> iter(db_->NewIterator(leveldb::ReadOptions()));
   iter->SeekToFirst();
   if (iter->Valid()) {  // DB was not empty--we shouldn't have been called.
     LOG(ERROR) << "File system origin database is corrupt!";
     return false;
@@ skipping 35 matching lines @@
     return false;
   }
   // The database must not yet exist; initialize it.
   if (!StoreDefaultValues())
     return false;
   *file_id = 0;
   return true;
 }
 
 // This does very few safety checks!
-bool SandboxDirectoryDatabase::AddFileInfoHelper(
-    const FileInfo& info, FileId file_id, leveldb::WriteBatch* batch) {
+bool SandboxDirectoryDatabase::AddFileInfoHelper(const FileInfo& info,
+                                                 FileId file_id,
+                                                 leveldb::WriteBatch* batch) {
   if (!VerifyDataPath(info.data_path)) {
     LOG(ERROR) << "Invalid data path is given: " << info.data_path.value();
     return false;
   }
   std::string id_string = GetFileLookupKey(file_id);
   if (!file_id) {
     // The root directory doesn't need to be looked up by path from its parent.
     DCHECK(!info.parent_id);
     DCHECK(info.data_path.empty());
   } else {
     std::string child_key = GetChildLookupKey(info.parent_id, info.name);
     batch->Put(child_key, id_string);
   }
   Pickle pickle;
   if (!PickleFromFileInfo(info, &pickle))
     return false;
-  batch->Put(
-      id_string,
-      leveldb::Slice(reinterpret_cast<const char *>(pickle.data()),
-                     pickle.size()));
+  batch->Put(id_string,
+             leveldb::Slice(reinterpret_cast<const char*>(pickle.data()),
+                            pickle.size()));
   return true;
 }
 
 // This does very few safety checks!
 bool SandboxDirectoryDatabase::RemoveFileInfoHelper(
-    FileId file_id, leveldb::WriteBatch* batch) {
+    FileId file_id,
+    leveldb::WriteBatch* batch) {
   DCHECK(file_id);  // You can't remove the root, ever.  Just delete the DB.
   FileInfo info;
   if (!GetFileInfo(file_id, &info))
     return false;
   if (info.data_path.empty()) {  // It's a directory
     std::vector<FileId> children;
     // TODO(ericu): Make a faster is-the-directory-empty check.
     if (!ListChildren(file_id, &children))
       return false;
     if (children.size()) {
       LOG(ERROR) << "Can't remove a directory with children.";
       return false;
     }
   }
   batch->Delete(GetChildLookupKey(info.parent_id, info.name));
   batch->Delete(GetFileLookupKey(file_id));
   return true;
 }
 
 void SandboxDirectoryDatabase::HandleError(
     const tracked_objects::Location& from_here,
     const leveldb::Status& status) {
-  LOG(ERROR) << "SandboxDirectoryDatabase failed at: "
-             << from_here.ToString() << " with error: " << status.ToString();
+  LOG(ERROR) << "SandboxDirectoryDatabase failed at: " << from_here.ToString()
+             << " with error: " << status.ToString();
   db_.reset();
 }
 
-}  // namespace fileapi
+}  // namespace storage