Revert revision 176015

chrome/browser/extensions/api/storage/storage_api.cc

Index: chrome/browser/extensions/api/storage/storage_api.cc
===================================================================
--- chrome/browser/extensions/api/storage/storage_api.cc	(revision 176053)
+++ chrome/browser/extensions/api/storage/storage_api.cc	(working copy)
@@ -1,286 +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/storage/storage_api.h"
-
-#include <string>
-#include <vector>
-
-#include "base/bind.h"
-#include "base/stringprintf.h"
-#include "base/values.h"
-#include "chrome/browser/extensions/api/storage/settings_frontend.h"
-#include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/extensions/extensions_quota_service.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/common/extensions/api/storage.h"
-#include "content/public/browser/browser_thread.h"
-
-namespace extensions {
-
-using content::BrowserThread;
-
-namespace {
-const char kUnsupportedArgumentType[] = "Unsupported argument type";
-const char kInvalidNamespaceErrorMessage[] =
-    "\"%s\" is not available in this instance of Chrome";
-const char kManagedNamespaceDisabledErrorMessage[] =
-    "\"managed\" is disabled. Use \"--%s\" to enable it.";
-const char kStorageErrorMessage[] = "Storage error";
-}  // namespace
-
-// SettingsFunction
-
-SettingsFunction::SettingsFunction()
-    : settings_namespace_(settings_namespace::INVALID) {}
-
-SettingsFunction::~SettingsFunction() {}
-
-bool SettingsFunction::ShouldSkipQuotaLimiting() const {
-  // Only apply quota if this is for sync storage.
-  std::string settings_namespace_string;
-  if (!args_->GetString(0, &settings_namespace_string)) {
-    // This is an error but it will be caught in RunImpl(), there is no
-    // mechanism to signify an error from this function.
-    return false;
-  }
-  return settings_namespace_string != "sync";
-}
-
-bool SettingsFunction::RunImpl() {
-  std::string settings_namespace_string;
-  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &settings_namespace_string));
-  args_->Remove(0, NULL);
-  settings_namespace_ =
-      settings_namespace::FromString(settings_namespace_string);
-  EXTENSION_FUNCTION_VALIDATE(
-      settings_namespace_ != settings_namespace::INVALID);
-
-  SettingsFrontend* frontend =
-      profile()->GetExtensionService()->settings_frontend();
-  if (!frontend->IsStorageEnabled(settings_namespace_)) {
-    error_ = base::StringPrintf(kInvalidNamespaceErrorMessage,
-                                settings_namespace_string.c_str());
-    return false;
-  }
-
-  observers_ = frontend->GetObservers();
-  frontend->RunWithStorage(
-      extension_id(),
-      settings_namespace_,
-      base::Bind(&SettingsFunction::AsyncRunWithStorage, this));
-  return true;
-}
-
-void SettingsFunction::AsyncRunWithStorage(ValueStore* storage) {
-  bool success = RunWithStorage(storage);
-  BrowserThread::PostTask(
-      BrowserThread::UI,
-      FROM_HERE,
-      base::Bind(&SettingsFunction::SendResponse, this, success));
-}
-
-bool SettingsFunction::UseReadResult(ValueStore::ReadResult result) {
-  if (result->HasError()) {
-    error_ = result->error();
-    return false;
-  }
-
-  SetResult(result->settings().release());
-  return true;
-}
-
-bool SettingsFunction::UseWriteResult(ValueStore::WriteResult result) {
-  if (result->HasError()) {
-    error_ = result->error();
-    return false;
-  }
-
-  if (!result->changes().empty()) {
-    observers_->Notify(
-        &SettingsObserver::OnSettingsChanged,
-        extension_id(),
-        settings_namespace_,
-        ValueStoreChange::ToJson(result->changes()));
-  }
-
-  return true;
-}
-
-// Concrete settings functions
-
-namespace {
-
-// Adds all StringValues from a ListValue to a vector of strings.
-void AddAllStringValues(const ListValue& from, std::vector<std::string>* to) {
-  DCHECK(to->empty());
-  std::string as_string;
-  for (ListValue::const_iterator it = from.begin(); it != from.end(); ++it) {
-    if ((*it)->GetAsString(&as_string)) {
-      to->push_back(as_string);
-    }
-  }
-}
-
-// Gets the keys of a DictionaryValue.
-std::vector<std::string> GetKeys(const DictionaryValue& dict) {
-  std::vector<std::string> keys;
-  for (DictionaryValue::key_iterator it = dict.begin_keys();
-      it != dict.end_keys(); ++it) {
-    keys.push_back(*it);
-  }
-  return keys;
-}
-
-// Creates quota heuristics for settings modification.
-void GetModificationQuotaLimitHeuristics(QuotaLimitHeuristics* heuristics) {
-  QuotaLimitHeuristic::Config longLimitConfig = {
-    // See storage.json for current value.
-    api::storage::sync::MAX_WRITE_OPERATIONS_PER_HOUR,
-    base::TimeDelta::FromHours(1)
-  };
-  heuristics->push_back(
-      new ExtensionsQuotaService::TimedLimit(
-          longLimitConfig,
-          new QuotaLimitHeuristic::SingletonBucketMapper(),
-          "MAX_WRITE_OPERATIONS_PER_HOUR"));
-
-  // A max of 10 operations per minute, sustained over 10 minutes.
-  QuotaLimitHeuristic::Config shortLimitConfig = {
-    // See storage.json for current value.
-    api::storage::sync::MAX_SUSTAINED_WRITE_OPERATIONS_PER_MINUTE,
-    base::TimeDelta::FromMinutes(1)
-  };
-  heuristics->push_back(
-      new ExtensionsQuotaService::SustainedLimit(
-          base::TimeDelta::FromMinutes(10),
-          shortLimitConfig,
-          new QuotaLimitHeuristic::SingletonBucketMapper(),
-          "MAX_SUSTAINED_WRITE_OPERATIONS_PER_MINUTE"));
-};
-
-}  // namespace
-
-bool StorageGetFunction::RunWithStorage(ValueStore* storage) {
-  Value* input = NULL;
-  EXTENSION_FUNCTION_VALIDATE(args_->Get(0, &input));
-
-  switch (input->GetType()) {
-    case Value::TYPE_NULL:
-      return UseReadResult(storage->Get());
-
-    case Value::TYPE_STRING: {
-      std::string as_string;
-      input->GetAsString(&as_string);
-      return UseReadResult(storage->Get(as_string));
-    }
-
-    case Value::TYPE_LIST: {
-      std::vector<std::string> as_string_list;
-      AddAllStringValues(*static_cast<ListValue*>(input), &as_string_list);
-      return UseReadResult(storage->Get(as_string_list));
-    }
-
-    case Value::TYPE_DICTIONARY: {
-      DictionaryValue* as_dict = static_cast<DictionaryValue*>(input);
-      ValueStore::ReadResult result = storage->Get(GetKeys(*as_dict));
-      if (result->HasError()) {
-        return UseReadResult(result.Pass());
-      }
-
-      DictionaryValue* with_default_values = as_dict->DeepCopy();
-      with_default_values->MergeDictionary(result->settings().get());
-      return UseReadResult(
-          ValueStore::MakeReadResult(with_default_values));
-    }
-
-    default:
-      return UseReadResult(
-          ValueStore::MakeReadResult(kUnsupportedArgumentType));
-  }
-}
-
-bool StorageGetBytesInUseFunction::RunWithStorage(ValueStore* storage) {
-  Value* input = NULL;
-  EXTENSION_FUNCTION_VALIDATE(args_->Get(0, &input));
-
-  size_t bytes_in_use = 0;
-
-  switch (input->GetType()) {
-    case Value::TYPE_NULL:
-      bytes_in_use = storage->GetBytesInUse();
-      break;
-
-    case Value::TYPE_STRING: {
-      std::string as_string;
-      input->GetAsString(&as_string);
-      bytes_in_use = storage->GetBytesInUse(as_string);
-      break;
-    }
-
-    case Value::TYPE_LIST: {
-      std::vector<std::string> as_string_list;
-      AddAllStringValues(*static_cast<ListValue*>(input), &as_string_list);
-      bytes_in_use = storage->GetBytesInUse(as_string_list);
-      break;
-    }
-
-    default:
-      error_ = kUnsupportedArgumentType;
-      return false;
-  }
-
-  SetResult(Value::CreateIntegerValue(bytes_in_use));
-  return true;
-}
-
-bool StorageSetFunction::RunWithStorage(ValueStore* storage) {
-  DictionaryValue* input = NULL;
-  EXTENSION_FUNCTION_VALIDATE(args_->GetDictionary(0, &input));
-  return UseWriteResult(storage->Set(ValueStore::DEFAULTS, *input));
-}
-
-void StorageSetFunction::GetQuotaLimitHeuristics(
-    QuotaLimitHeuristics* heuristics) const {
-  GetModificationQuotaLimitHeuristics(heuristics);
-}
-
-bool StorageRemoveFunction::RunWithStorage(ValueStore* storage) {
-  Value* input = NULL;
-  EXTENSION_FUNCTION_VALIDATE(args_->Get(0, &input));
-
-  switch (input->GetType()) {
-    case Value::TYPE_STRING: {
-      std::string as_string;
-      input->GetAsString(&as_string);
-      return UseWriteResult(storage->Remove(as_string));
-    }
-
-    case Value::TYPE_LIST: {
-      std::vector<std::string> as_string_list;
-      AddAllStringValues(*static_cast<ListValue*>(input), &as_string_list);
-      return UseWriteResult(storage->Remove(as_string_list));
-    }
-
-    default:
-      return UseWriteResult(
-          ValueStore::MakeWriteResult(kUnsupportedArgumentType));
-  };
-}
-
-void StorageRemoveFunction::GetQuotaLimitHeuristics(
-    QuotaLimitHeuristics* heuristics) const {
-  GetModificationQuotaLimitHeuristics(heuristics);
-}
-
-bool StorageClearFunction::RunWithStorage(ValueStore* storage) {
-  return UseWriteResult(storage->Clear());
-}
-
-void StorageClearFunction::GetQuotaLimitHeuristics(
-    QuotaLimitHeuristics* heuristics) const {
-  GetModificationQuotaLimitHeuristics(heuristics);
-}
-
-}  // namespace extensions