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

chrome/browser/extensions/api/system_info_storage/test_storage_info_provider.h

Index: chrome/browser/extensions/api/system_info_storage/test_storage_info_provider.h
diff --git a/chrome/browser/extensions/api/system_info_storage/test_storage_info_provider.h b/chrome/browser/extensions/api/system_info_storage/test_storage_info_provider.h
new file mode 100644
index 0000000000000000000000000000000000000000..1d2f42b1c99867cd93fea5de5205dffb5a65c644
--- /dev/null
+++ b/chrome/browser/extensions/api/system_info_storage/test_storage_info_provider.h
@@ -0,0 +1,61 @@
+// Copyright 2013 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.
+
+#ifndef CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_STORAGE_TEST_STORAGE_INFO_PROVIDER_H_
+#define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_STORAGE_TEST_STORAGE_INFO_PROVIDER_H_
+
+#include <vector>
+
+#include "chrome/browser/extensions/api/system_info_storage/storage_info_provider.h"
+#include "chrome/browser/storage_monitor/storage_info.h"
+
+namespace extensions {
+
+struct TestStorageUnitInfo {
+  const char* device_id;
+  const char* transient_id;
+  const char* name;
+  const char* type;
+  // Total amount of the storage device space, in bytes.
+  double capacity;
+  // The available amount of the storage space, in bytes.
+  double available_capacity;
+  // The change step of available capacity for simulating the free space change.
+  // Each querying operation will increase the |available_capacity| with this
+  // value.
+  int change_step;
+};
+
+// StorageInfoProvider for unit_tests and browser_tests.
+// Override related methods to avoid calling out to the actual system.
+//
+// TODO(Haojian) : Improve StorageInfoProvider test. Create a interface that
+// represents system storage functions, with a googlemock implementation.
+class TestStorageInfoProvider : public extensions::StorageInfoProvider {
+ public:
+  TestStorageInfoProvider(const struct TestStorageUnitInfo* testing_data,
+                          size_t n);
+
+  static chrome::StorageInfo BuildStorageInfo(const TestStorageUnitInfo& unit);
+
+  virtual std::string GetTransientIdForDeviceId(
+      const std::string& device_id) const OVERRIDE;
+  virtual std::string GetDeviceIdForTransientId(
+      const std::string& transient_id) const OVERRIDE;
+
+ protected:
+  virtual ~TestStorageInfoProvider();
+
+  // StorageInfoProvider implementations.
+  virtual bool QueryInfo(extensions::StorageInfo* info) OVERRIDE;
+  virtual std::vector<chrome::StorageInfo> GetAllStorages() const OVERRIDE;
+  virtual int64 GetStorageFreeSpaceFromTransientId(
+      const std::string& transient_id) OVERRIDE;
+
+  std::vector<struct TestStorageUnitInfo> testing_data_;
+};
+
+}  // namespace extensions
+#endif  // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INFO_STORAGE_TEST_STORAGE_INFO_PROVIDER_H_
+