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diff --git a/runtime/compat_framework.h b/runtime/compat_framework.h
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+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_RUNTIME_COMPAT_FRAMEWORK_H_
+#define ART_RUNTIME_COMPAT_FRAMEWORK_H_
+
+#include <set>
+
+#include "base/string_view_cpp20.h"
+
+namespace art {
+
+// ART counterpart of the compat framework (go/compat-framework).
+// Created in order to avoid repeated up-calls to Java.
+class CompatFramework {
+ public:
+  // Compat change reported state
+  // This must be kept in sync with AppCompatibilityChangeReported.State in
+  // frameworks/base/cmds/statsd/src/atoms.proto
+  enum class ChangeState {
+    kUnknown,
+    kEnabled,
+    kDisabled,
+    kLogged
+  };
+
+  void SetDisabledCompatChanges(const std::set<uint64_t>& disabled_changes) {
+    disabled_compat_changes_ = disabled_changes;
+  }
+
+  const std::set<uint64_t>& GetDisabledCompatChanges() const {
+    return disabled_compat_changes_;
+  }
+  // Query if a given compatibility change is enabled for the current process.
+  // This also gets logged to logcat, and we add the information we logged in
+  // reported_compat_changes_. This ensures we only log once per change id for the app's lifetime.
+  bool IsChangeEnabled(uint64_t change_id);
+
+  // Logs that the code path for this compatibility change has been reached.
+  // This also gets logged to logcat, and we add the information we logged in
+  // reported_compat_changes_. This ensures we only log once per change id for the app's lifetime.
+  void LogChange(uint64_t change_id);
+
+ private:
+  // Get a string equivalent for a compatibility change state.
+  static std::string_view ChangeStateToString(ChangeState s);
+  // Report the state of a compatibility change to logcat.
+  // TODO(145743810): also report to statsd.
+  void ReportChange(uint64_t change_id, ChangeState state);
+
+  // A set of disabled compat changes for the running app, all other changes are enabled.
+  std::set<uint64_t> disabled_compat_changes_;
+
+  // A set of repoted compat changes for the running app.
+  std::set<uint64_t> reported_compat_changes_;
+};
+
+}  // namespace art
+
+#endif  // ART_RUNTIME_COMPAT_FRAMEWORK_H_