[spelling] existance to existence

components/sync/device_info/device_info_sync_bridge_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/sync/device_info/device_info_sync_bridge.h"
 
 #include <algorithm>
 #include <set>
 #include <utility>
 
@@ skipping 599 matching lines @@
   EXPECT_EQ(2, change_count());
 
   // The remote should beat the local in conflict.
   EXPECT_EQ(4u, bridge()->GetAllDeviceInfo().size());
   VerifyEqual(unique_local,
               *bridge()->GetDeviceInfo(unique_local.cache_guid()).get());
   VerifyEqual(unique_remote,
               *bridge()->GetDeviceInfo(unique_remote.cache_guid()).get());
   VerifyEqual(conflict_remote, *bridge()->GetDeviceInfo(conflict_guid).get());
 
-  // bridge should have told the processor about the existance of unique_local.
+  // bridge should have told the processor about the existence of unique_local.
   EXPECT_TRUE(processor().delete_set().empty());
   EXPECT_EQ(3u, processor().put_multimap().size());
   EXPECT_EQ(1u, processor().put_multimap().count(unique_local.cache_guid()));
   const auto& it = processor().put_multimap().find(unique_local.cache_guid());
   ASSERT_NE(processor().put_multimap().end(), it);
   VerifyEqual(unique_local, it->second->specifics.device_info());
 
   RestartBridge();
   EXPECT_EQ(state.encryption_key_name(),
             processor().metadata()->GetModelTypeState().encryption_key_name());
@@ skipping 132 matching lines @@
 
   // Reloading from storage shouldn't contain remote data.
   RestartBridge();
   EXPECT_EQ(1u, bridge()->GetAllDeviceInfo().size());
   EXPECT_EQ(4, change_count());
 }
 
 }  // namespace
 
 }  // namespace syncer