Revert of Move some sync/notifier to components/invalidation

sync/notifier/invalidator_registrar.cc

Index: sync/notifier/invalidator_registrar.cc
diff --git a/sync/notifier/invalidator_registrar.cc b/sync/notifier/invalidator_registrar.cc
new file mode 100644
index 0000000000000000000000000000000000000000..334505287d20de79c9993c35682a4ec6fbe3b003
--- /dev/null
+++ b/sync/notifier/invalidator_registrar.cc
@@ -0,0 +1,149 @@
+// Copyright (c) 2012 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 "sync/notifier/invalidator_registrar.h"
+
+#include <cstddef>
+#include <iterator>
+#include <utility>
+
+#include "base/logging.h"
+#include "sync/notifier/object_id_invalidation_map.h"
+
+namespace syncer {
+
+InvalidatorRegistrar::InvalidatorRegistrar()
+    : state_(DEFAULT_INVALIDATION_ERROR) {}
+
+InvalidatorRegistrar::~InvalidatorRegistrar() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  CHECK(!handlers_.might_have_observers());
+  CHECK(handler_to_ids_map_.empty());
+}
+
+void InvalidatorRegistrar::RegisterHandler(InvalidationHandler* handler) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  CHECK(handler);
+  CHECK(!handlers_.HasObserver(handler));
+  handlers_.AddObserver(handler);
+}
+
+void InvalidatorRegistrar::UpdateRegisteredIds(
+    InvalidationHandler* handler,
+    const ObjectIdSet& ids) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  CHECK(handler);
+  CHECK(handlers_.HasObserver(handler));
+
+  for (HandlerIdsMap::const_iterator it = handler_to_ids_map_.begin();
+       it != handler_to_ids_map_.end(); ++it) {
+    if (it->first == handler) {
+      continue;
+    }
+
+    std::vector<invalidation::ObjectId> intersection;
+    std::set_intersection(
+        it->second.begin(), it->second.end(),
+        ids.begin(), ids.end(),
+        std::inserter(intersection, intersection.end()),
+        ObjectIdLessThan());
+    CHECK(intersection.empty())
+        << "Duplicate registration: trying to register "
+        << ObjectIdToString(*intersection.begin()) << " for "
+        << handler << " when it's already registered for "
+        << it->first;
+  }
+
+  if (ids.empty()) {
+    handler_to_ids_map_.erase(handler);
+  } else {
+    handler_to_ids_map_[handler] = ids;
+  }
+}
+
+void InvalidatorRegistrar::UnregisterHandler(InvalidationHandler* handler) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  CHECK(handler);
+  CHECK(handlers_.HasObserver(handler));
+  handlers_.RemoveObserver(handler);
+  handler_to_ids_map_.erase(handler);
+}
+
+ObjectIdSet InvalidatorRegistrar::GetRegisteredIds(
+    InvalidationHandler* handler) const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  HandlerIdsMap::const_iterator lookup = handler_to_ids_map_.find(handler);
+  if (lookup != handler_to_ids_map_.end()) {
+    return lookup->second;
+  } else {
+    return ObjectIdSet();
+  }
+}
+
+ObjectIdSet InvalidatorRegistrar::GetAllRegisteredIds() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  ObjectIdSet registered_ids;
+  for (HandlerIdsMap::const_iterator it = handler_to_ids_map_.begin();
+       it != handler_to_ids_map_.end(); ++it) {
+    registered_ids.insert(it->second.begin(), it->second.end());
+  }
+  return registered_ids;
+}
+
+void InvalidatorRegistrar::DispatchInvalidationsToHandlers(
+    const ObjectIdInvalidationMap& invalidation_map) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  // If we have no handlers, there's nothing to do.
+  if (!handlers_.might_have_observers()) {
+    return;
+  }
+
+  for (HandlerIdsMap::iterator it = handler_to_ids_map_.begin();
+       it != handler_to_ids_map_.end(); ++it) {
+    ObjectIdInvalidationMap to_emit =
+        invalidation_map.GetSubsetWithObjectIds(it->second);
+    if (!to_emit.Empty()) {
+      it->first->OnIncomingInvalidation(to_emit);
+    }
+  }
+}
+
+void InvalidatorRegistrar::UpdateInvalidatorState(InvalidatorState state) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  DVLOG(1) << "New invalidator state: " << InvalidatorStateToString(state_)
+      << " -> " << InvalidatorStateToString(state);
+  state_ = state;
+  FOR_EACH_OBSERVER(InvalidationHandler, handlers_,
+                    OnInvalidatorStateChange(state));
+}
+
+InvalidatorState InvalidatorRegistrar::GetInvalidatorState() const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  return state_;
+}
+
+std::map<std::string, ObjectIdSet>
+InvalidatorRegistrar::GetSanitizedHandlersIdsMap() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  std::map<std::string, ObjectIdSet> clean_handlers_to_ids;
+  for (HandlerIdsMap::const_iterator it = handler_to_ids_map_.begin();
+       it != handler_to_ids_map_.end();
+       ++it) {
+    clean_handlers_to_ids[it->first->GetOwnerName()] = ObjectIdSet(it->second);
+  }
+  return clean_handlers_to_ids;
+}
+
+bool InvalidatorRegistrar::IsHandlerRegisteredForTest(
+    InvalidationHandler* handler) const {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  return handlers_.HasObserver(handler);
+}
+
+void InvalidatorRegistrar::DetachFromThreadForTest() {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  thread_checker_.DetachFromThread();
+}
+
+}  // namespace syncer