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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_CLIENT_H_
#define COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_CLIENT_H_
#include <string>
#include "base/files/file_path.h"
#include "base/memory/scoped_refptr.h"
#include "base/version.h"
#include "components/variations/proto/study.pb.h"
#include "components/variations/seed_response.h"
#include "components/version_info/channel.h"
namespace network {
class SharedURLLoaderFactory;
}
namespace network_time {
class NetworkTimeTracker;
}
class PrefService;
namespace variations {
// An abstraction of operations that depend on the embedder's (e.g. Chrome)
// environment.
class VariationsServiceClient {
public:
virtual ~VariationsServiceClient() = default;
// Returns the version to use for variations seed simulation.
virtual base::Version GetVersionForSimulation() = 0;
virtual scoped_refptr<network::SharedURLLoaderFactory>
GetURLLoaderFactory() = 0;
virtual network_time::NetworkTimeTracker* GetNetworkTimeTracker() = 0;
// Returns whether the embedder overrides the value of the restrict parameter.
// |parameter| is an out-param that will contain the value of the restrict
// parameter if true is returned.
virtual bool OverridesRestrictParameter(std::string* parameter) = 0;
// Gets the channel to use for variations. The --fake-variations-channel
// override switch takes precedence over the embedder-provided channel.
// If that switch is not set, it will return the embedder-provided channel,
// (which could be UNKNOWN).
version_info::Channel GetChannelForVariations();
// Returns the current form factor of the device.
virtual Study::FormFactor GetCurrentFormFactor();
// Returns the directory in which to store variations seed files. Only clients
// on platforms that support dedicated seed files should override this.
virtual base::FilePath GetVariationsSeedFileDir();
// If a native variations service that directly fetches the seed from the
// server is implemented, returns the SeedResponse from the native variations
// seed store, and removes the seed from the native storage given that we can
// assume that the returned seed would be stored into Chrome Prefs. Otherwise,
// returns nullptr.
virtual std::unique_ptr<SeedResponse> TakeSeedFromNativeVariationsSeedStore();
// Returns whether the client is enterprise.
// TODO(manukh): crbug.com/1003025. This is inconsistent with UMA which
// analyzes brand_code to determine if the client is an enterprise user:
// - For android, linux, and iOS, they are consistent because both UMA and
// chromium consider all such devices as non-enterprise.
// - For mac and chromeOS, they are inconsistent because UMA does not consider
// any such devices as enterprise, but chromium does.
// - For windows, both consider some clients as enterprise, but use different
// chromium doesn't use brand_code so they may have inconsistent results.
// That being said, studies restricted by finch won't need to filter on UMA as
// well. But this could be confusing and could prevent using UMA filters on a
// non finch-filtered study to analyze the finch-filtered launch potential.
virtual bool IsEnterprise() = 0;
// Removes stored Google Groups variations information for deleted profiles.
// Must be called at startup, prior to the variations Google Groups being
// read.
// This is a no-op on platforms that do not support multiple profiles.
virtual void RemoveGoogleGroupsFromPrefsForDeletedProfiles(
PrefService* local_state) = 0;
private:
// Gets the channel of the embedder. But all variations callers should use
// |GetChannelForVariations()| instead.
virtual version_info::Channel GetChannel() = 0;
};
} // namespace variations
#endif // COMPONENTS_VARIATIONS_SERVICE_VARIATIONS_SERVICE_CLIENT_H_
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