Remove deleted offline page suggestions from opened NTPs

components/ntp_snippets/ntp_snippets_service_unittest.cc

 // Copyright 2015 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/ntp_snippets/ntp_snippets_service.h"
 
 #include <memory>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 217 matching lines @@
 
 class MockProviderObserver : public ContentSuggestionsProvider::Observer {
  public:
   void OnNewSuggestions(ContentSuggestionsProvider* provider,
                         Category category,
                         std::vector<ContentSuggestion> suggestions) override {}
   MOCK_METHOD3(OnCategoryStatusChanged,
                void(ContentSuggestionsProvider* provider,
                     Category category,
                     CategoryStatus new_status));
+  MOCK_METHOD3(OnSuggestionInvalidated,
+               void(ContentSuggestionsProvider* provider,
+                    Category category,
+                    const std::string& suggestion_id));
 };
 
 class WaitForDBLoad {
  public:
   WaitForDBLoad(MockProviderObserver* observer, NTPSnippetsService* service)
       : observer_(observer) {
     EXPECT_CALL(*observer_, OnCategoryStatusChanged(_, _, _))
         .WillOnce(Invoke(this, &WaitForDBLoad::OnCategoryStatusChanged));
     if (!service->ready())
       run_loop_.Run();
@@ skipping 632 matching lines @@
   EXPECT_CALL(mock_scheduler(), Schedule(_, _, _, _)).Times(1);
   service()->OnDisabledReasonChanged(DisabledReason::NONE);
   EXPECT_CALL(observer(),
               OnCategoryStatusChanged(_, _, CategoryStatus::AVAILABLE));
   base::RunLoop().RunUntilIdle();
   EXPECT_EQ(NTPSnippetsService::State::READY, service()->state_);
   EXPECT_FALSE(service()->GetSnippetsForTesting().empty());
 }
 
 }  // namespace ntp_snippets