Notify GCMAppHandlers when the store is reset, so they clear cached IDs

components/invalidation/impl/gcm_network_channel_unittest.cc

 // Copyright 2014 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/invalidation/impl/gcm_network_channel.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/base64url.h"
 #include "base/run_loop.h"
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "google_apis/gaia/google_service_auth_error.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "net/url_request/url_request_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 
 class TestGCMNetworkChannelDelegate : public GCMNetworkChannelDelegate {
  public:
   TestGCMNetworkChannelDelegate()
       : register_call_count_(0) {}
 
-  void Initialize(
-      GCMNetworkChannelDelegate::ConnectionStateCallback callback) override {
-    connection_state_callback = callback;
+  void Initialize(ConnectionStateCallback connection_state_callback,
+                  base::Closure store_reset_callback) override {
+    this->connection_state_callback = connection_state_callback;
   }
 
   void RequestToken(RequestTokenCallback callback) override {
     request_token_callback = callback;
   }
 
   void InvalidateToken(const std::string& token) override {
     invalidated_token = token;
   }
 
@@ skipping 434 matching lines @@
   delegate()->request_token_callback.Run(
       GoogleServiceAuthError::AuthErrorNone(), "access.token");
   RunLoopUntilIdle();
   EXPECT_EQ(url_fetchers_created_count(), 3);
   // Echo_token should be from second message.
   EXPECT_EQ("echo.token", get_last_echo_token());
 }
 #endif
 
 }  // namespace syncer