[Invalidations] Add GetInvalidatorState() to Invalidator{,Frontend}

sync/notifier/invalidator_factory_unittest.cc

 // 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_factory.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 15 matching lines @@
 class InvalidatorFactoryTest : public testing::Test {
  protected:
 
   virtual void SetUp() OVERRIDE {
     notifier_options_.request_context_getter =
         new TestURLRequestContextGetter(message_loop_.message_loop_proxy());
   }
 
   virtual void TearDown() OVERRIDE {
     message_loop_.RunAllPending();
-    EXPECT_EQ(0, fake_handler_.GetNotificationCount());
+    EXPECT_EQ(0, fake_handler_.GetInvalidationCount());
   }
 
   MessageLoop message_loop_;
   FakeInvalidationHandler fake_handler_;
   notifier::NotifierOptions notifier_options_;
   scoped_ptr<InvalidatorFactory> factory_;
 };
 
 // Test basic creation of a NonBlockingInvalidationNotifier.
 TEST_F(InvalidatorFactoryTest, Basic) {
@@ skipping 28 matching lines @@
   ASSERT_TRUE(invalidator.get());
   ObjectIdSet ids = ModelTypeSetToObjectIdSet(ModelTypeSet(syncer::BOOKMARKS));
   invalidator->RegisterHandler(&fake_handler_);
   invalidator->UpdateRegisteredIds(&fake_handler_, ids);
   invalidator->UnregisterHandler(&fake_handler_);
 #endif
 }
 
 }  // namespace
 }  // namespace syncer