Added AutofillStrikeDatabase Framework

Added skeleton framework for AutofillStrikeDatabase.
It will be used to store data about the number of times a user
refuses to save their info.

Bug: 884817

Change-Id: Iaffac0ab45785e4c0ff261ecb9bbde31e270e00a
Reviewed-on: https://chromium-review.googlesource.com/1228774Reviewed-by: Sebastien Seguin-Gagnon <sebsg@chromium.org>
Reviewed-by: Jared Saul <jsaul@google.com>
Commit-Queue: Anne Lim <annelim@google.com>
Cr-Commit-Position: refs/heads/master@{#592047}

chrome/browser/BUILD.gn

@@ -111,6 +111,8 @@ jumbo_split_static_library("browser") {
     "autofill/personal_data_manager_factory.h",
     "autofill/risk_util.cc",
     "autofill/risk_util.h",
+    "autofill/strike_database.cc",
+    "autofill/strike_database.h",
     "autofill/validation_rules_storage_factory.cc",
     "autofill/validation_rules_storage_factory.h",
     "background_fetch/background_fetch_delegate_factory.cc",
@@ -1695,6 +1697,7 @@ jumbo_split_static_library("browser") {
     "//chrome:strings",
     "//chrome/app/resources:platform_locale_settings",
     "//chrome/app/theme:theme_resources",
+    "//chrome/browser/autofill:strike_data",
     "//chrome/browser/devtools",
     "//chrome/browser/media:media_engagement_preload_proto",
     "//chrome/browser/media:mojo_bindings",

chrome/browser/autofill/BUILD.gn

+# Copyright 2018 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.
+
+import("//third_party/protobuf/proto_library.gni")
+
+proto_library("strike_data") {
+  sources = [
+    "strike_data.proto",
+  ]
+}

chrome/browser/autofill/strike_data.proto

+// Copyright 2018 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.
+
+syntax = "proto2";
+
+package autofill;
+
+option optimize_for = LITE_RUNTIME;
+
+message StrikeData {
+  // Total number of strikes thus far.
+  optional int32 num_strikes = 1;
+
+  // Timestamp of when a strike was last added or removed
+  // for this entry. Can be used to expire strikes later.
+  optional int64 last_update_timestamp = 2;
+}

chrome/browser/autofill/strike_database.cc

+// Copyright 2018 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.
+
+#include "chrome/browser/autofill/strike_database.h"
+
+#include "base/task/post_task.h"
+#include "chrome/browser/autofill/strike_data.pb.h"
+#include "components/leveldb_proto/proto_database_impl.h"
+
+namespace autofill {
+
+namespace {
+
+const char kDatabaseClientName[] = "StrikeService";
+
+}  // namespace
+
+StrikeDatabase::StrikeDatabase(const base::FilePath& database_dir)
+    : db_(std::make_unique<leveldb_proto::ProtoDatabaseImpl<StrikeData>>(
+          base::CreateSequencedTaskRunnerWithTraits(
+              {base::MayBlock(), base::TaskPriority::BEST_EFFORT,
+               base::TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN}))),
+      weak_ptr_factory_(this) {
+  db_->Init(kDatabaseClientName, database_dir,
+            leveldb_proto::CreateSimpleOptions(),
+            base::BindRepeating(&StrikeDatabase::OnDatabaseInit,
+                                weak_ptr_factory_.GetWeakPtr()));
+}
+
+StrikeDatabase::~StrikeDatabase() {}
+
+void StrikeDatabase::OnDatabaseInit(bool success) {}
+
+}  // namespace autofill

chrome/browser/autofill/strike_database.h

+// Copyright 2018 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_AUTOFILL_STRIKE_DATABASE_H_
+#define CHROME_BROWSER_AUTOFILL_STRIKE_DATABASE_H_
+
+#include <memory>
+
+#include "base/callback_forward.h"
+#include "base/memory/weak_ptr.h"
+#include "components/leveldb_proto/proto_database.h"
+
+namespace autofill {
+class StrikeData;
+
+// Manages data on whether different Autofill opportunities should be offered to
+// the user. Projects can earn strikes in a number of ways; for instance, if a
+// user ignores or declines a prompt, or if a user accepts a prompt but the task
+// fails.
+class StrikeDatabase {
+ public:
+  StrikeDatabase(const base::FilePath& database_dir);
+  ~StrikeDatabase();
+
+ private:
+  void OnDatabaseInit(bool success);
+
+  std::unique_ptr<leveldb_proto::ProtoDatabase<StrikeData>> db_;
+
+  base::WeakPtrFactory<StrikeDatabase> weak_ptr_factory_;
+};
+
+}  // namespace autofill
+
+#endif  // CHROME_BROWSER_AUTOFILL_STRIKE_DATABASE_H_