Port Brave Sync server to Rust

Use SQLite for persistence and generate Rust protobuf bindings at build time.

Add Docker image support for containerized deployment.

Co-Authored-By: codex <[email protected]>

schema/protobuf/sync_pb/user_consent_specifics.proto

@@ -0,0 +1,113 @@
+// Copyright 2018 The Chromium Authors
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+// Sync protocol datatype extension for user consents.
+
+// If you change or add any fields in this file, update proto_visitors.h and
+// potentially proto_enum_conversions.{h, cc}.
+
+syntax = "proto2";
+
+option go_package = "./sync_pb";
+
+option java_multiple_files = true;
+option java_package = "org.chromium.components.sync.protocol";
+
+option optimize_for = LITE_RUNTIME;
+
+package sync_pb;
+
+import "user_consent_types.proto";
+
+// Next id: 17
+message UserConsentSpecifics {
+  // ===========================================================================
+  // Fields common to all Chrome User Consents.
+  // ===========================================================================
+
+  // The UI language Chrome is using, represented as the IETF language tag
+  // defined in BCP 47. The region subtag is not included when it adds no
+  // distinguishing information to the language tag (e.g. both "en-US"
+  // and "fr" are correct here).
+  optional string locale = 4;
+
+  // The local time on the client when the user consent was recorded. The time
+  // as measured by client is given in microseconds since Windows epoch. This
+  // is needed since user consent recording may happen when a client is
+  // offline.
+  optional int64 client_consent_time_usec = 12;
+
+  // ===========================================================================
+  // The specific consent type. Add new User Consent types to
+  // user_consent_types.proto.
+  // ===========================================================================
+
+  oneof consent {
+    UserConsentTypes.SyncConsent sync_consent = 7;
+
+    UserConsentTypes.ArcBackupAndRestoreConsent arc_backup_and_restore_consent =
+        8;
+
+    UserConsentTypes.ArcGoogleLocationServiceConsent
+        arc_location_service_consent = 9;
+
+    UserConsentTypes.ArcPlayTermsOfServiceConsent
+        arc_play_terms_of_service_consent = 10;
+
+    UserConsentTypes.UnifiedConsent unified_consent = 13 [deprecated = true];
+
+    UserConsentTypes.AssistantActivityControlConsent
+        assistant_activity_control_consent = 14;
+
+    UserConsentTypes.AccountPasswordsConsent account_passwords_consent = 15;
+  }
+  reserved "arc_metrics_and_usage_consent";
+  reserved 11;
+  reserved "autofill_assistant_consent";
+  reserved 16;
+
+  // ===========================================================================
+  // Client only fields.
+  // ===========================================================================
+  // TODO(markusheintz): Refactor the code so that these fields can be moved out
+  // of this message.
+
+  // The account ID of the user who gave the consent. This field is used
+  // by UserEventService to distinguish consents from different users,
+  // as UserConsent does not get deleted when a user signs out. However,
+  // it should be cleared before being sent over the wire, as the UserEvent
+  // is sent over an authenticated channel, so this information would be
+  // redundant.
+  //
+  // For semantics and usage of the |account_id| in the signin codebase,
+  // see IdentityManager::GetPrimaryAccountId() or CoreAccountId.
+  optional string account_id = 6;
+
+  // ===========================================================================
+  // Deprecated fields. Please do not use them!
+  // They have to remain in the proto because the server must continue
+  // supporting legacy consent formats like this.
+  // ===========================================================================
+
+  // Which feature does the consent apply to?
+  enum Feature {
+    FEATURE_UNSPECIFIED = 0;
+    CHROME_SYNC = 1;
+    PLAY_STORE = 2;
+    BACKUP_AND_RESTORE = 3;
+    GOOGLE_LOCATION_SERVICE = 4;
+    CHROME_UNIFIED_CONSENT = 5;
+    // TODO(markusheintz): ASSISTANT_ACTIVITY_CONTROL was only added for
+    // compatibility with the Feature enum in UserEventSpecifics.UserConsent.
+    // Delete this value once the value is deleted from the other proto.
+    ASSISTANT_ACTIVITY_CONTROL = 6;
+  }
+  optional Feature feature = 1 [deprecated = true];
+  // Ids of the strings of the consent text presented to the user.
+  repeated int32 description_grd_ids = 2 [deprecated = true];
+  // Id of the string of the UI element the user clicked when consenting.
+  optional int32 confirmation_grd_id = 3 [deprecated = true];
+  // Was the consent for |feature| given or not given (denied/revoked)?
+  optional UserConsentTypes.ConsentStatus status = 5 [deprecated = true];
+}