identifiability_study_helper.h | Explore in Territory

// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_IDENTIFIABILITY_STUDY_HELPER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_IDENTIFIABILITY_STUDY_HELPER_H_

#include <stdint.h>

#include <array>
#include <initializer_list>

#include "base/compiler_specific.h"
#include "third_party/blink/public/common/privacy_budget/identifiability_study_settings.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_surface.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_token.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_token_builder.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/modules/modules_export.h"
#include "third_party/blink/renderer/platform/heap/forward.h"  // IWYU pragma: keep (blink::Visitor)
#include "third_party/blink/renderer/platform/heap/member.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"

// https://github.com/include-what-you-use/include-what-you-use/issues/1546
// IWYU pragma: no_forward_declare WTF::internal::__thisIsHereToForceASemicolonAfterThisMacro

// IWYU pragma: no_include "third_party/blink/renderer/platform/heap/visitor.h"

namespace blink {

// Text operations supported on different canvas types; the intent is to use
// these values (and any input supplied to these operations) to build a running
// hash that reprensents the sequence of text operations performed on the
// canvas. A hash of all other canvas operations is maintained by hashing the
// serialized PaintOps produced by the canvas in CanvasResourceProvider.
//
// If a canvas method to exfiltrate the canvas buffer is called by a script
// (getData(), etc.), this hash will be uploaded to UKM along with a hash of the
// canvas buffer data.
//
// **Don't renumber after the privacy budget study has started to ensure
// consistency.**
enum class CanvasOps { … };

// A helper class to simplify maintaining the current text digest for the canvas
// context. An operation count is also maintained to limit the performance
// impact of the study.
class IdentifiabilityStudyHelper final { … };

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_CANVAS_CANVAS2D_IDENTIFIABILITY_STUDY_HELPER_H_
chromium/third_party/blink/renderer/modules/canvas/canvas2d/identifiability_study_helper.h
