[subresource_filter] add //chrome level unit test harness

components/subresource_filter/content/browser/fake_safe_browsing_database_manager.cc

+// Copyright 2017 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 "components/subresource_filter/content/browser/fake_safe_browsing_database_manager.h"
+
+#include "base/bind.h"
+#include "base/bind_helpers.h"
+#include "content/public/browser/browser_thread.h"
+#include "url/gurl.h"
+
+FakeSafeBrowsingDatabaseManager::FakeSafeBrowsingDatabaseManager()
+    : simulate_timeout_(false) {}
+
+void FakeSafeBrowsingDatabaseManager::AddBlacklistedUrl(
+    const GURL& url,
+    safe_browsing::SBThreatType threat_type) {
+  url_to_threat_type_[url] = threat_type;
+}
+
+void FakeSafeBrowsingDatabaseManager::SimulateTimeout() {
+  simulate_timeout_ = true;
+}
+
+FakeSafeBrowsingDatabaseManager::~FakeSafeBrowsingDatabaseManager() {}
+
+bool FakeSafeBrowsingDatabaseManager::CheckUrlForSubresourceFilter(
+    const GURL& url,
+    Client* client) {
+  if (simulate_timeout_)
+    return false;
+  if (!url_to_threat_type_.count(url))
+    return true;
+
+  content::BrowserThread::PostTask(
+      content::BrowserThread::IO, FROM_HERE,
+      base::Bind(&Client::OnCheckBrowseUrlResult, base::Unretained(client), url,
+                 url_to_threat_type_[url], safe_browsing::ThreatMetadata()));
+  return false;
+}
+
+bool FakeSafeBrowsingDatabaseManager::CheckResourceUrl(const GURL& url,
+                                                       Client* client) {
+  return true;
+}
+
+bool FakeSafeBrowsingDatabaseManager::IsSupported() const {
+  return true;
+}
+bool FakeSafeBrowsingDatabaseManager::ChecksAreAlwaysAsync() const {
+  return false;
+}
+void FakeSafeBrowsingDatabaseManager::CancelCheck(Client* client) {}
+bool FakeSafeBrowsingDatabaseManager::CanCheckResourceType(
+    content::ResourceType /* resource_type */) const {
+  return true;
+}
+
+safe_browsing::ThreatSource FakeSafeBrowsingDatabaseManager::GetThreatSource()
+    const {
+  return safe_browsing::ThreatSource::LOCAL_PVER4;
+}
+
+bool FakeSafeBrowsingDatabaseManager::CheckExtensionIDs(
+    const std::set<std::string>& extension_ids,
+    Client* client) {
+  return true;
+}