Revert of Allow storing multiple replacements on SpellCheckResult

components/spellcheck/common/spellcheck_messages.h

 // 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.
 
 // IPC messages for spellcheck.
 // Multiply-included message file, hence no include guard.
 
 #include <stdint.h>
 
 #include "components/spellcheck/common/spellcheck_result.h"
 #include "components/spellcheck/spellcheck_build_features.h"
 #include "ipc/ipc_message_macros.h"
 
 #if !BUILDFLAG(ENABLE_SPELLCHECK)
 #error "Spellcheck should be enabled"
 #endif
 
 #define IPC_MESSAGE_START SpellCheckMsgStart
 
 IPC_ENUM_TRAITS(SpellCheckResult::Decoration)
 
 IPC_STRUCT_TRAITS_BEGIN(SpellCheckResult)
   IPC_STRUCT_TRAITS_MEMBER(decoration)
   IPC_STRUCT_TRAITS_MEMBER(location)
   IPC_STRUCT_TRAITS_MEMBER(length)
-  IPC_STRUCT_TRAITS_MEMBER(replacements)
+  IPC_STRUCT_TRAITS_MEMBER(replacement)
 IPC_STRUCT_TRAITS_END()
 
 // Messages sent from the browser to the renderer.
 
 #if !BUILDFLAG(USE_BROWSER_SPELLCHECKER)
 // Sends text-check results from the Spelling service when the service finishes
 // checking text received by a SpellCheckHostMsg_CallSpellingService message.
 // If the service is not available, the 4th parameter should be false and the
 // 5th parameter should contain the requested sentence.
 IPC_MESSAGE_ROUTED4(SpellCheckMsg_RespondSpellingService,
@@ skipping 65 matching lines @@
 
 #if BUILDFLAG(HAS_SPELLCHECK_PANEL)
 // Tells the browser to display or not display the SpellingPanel
 IPC_MESSAGE_ROUTED1(SpellCheckHostMsg_ShowSpellingPanel,
                     bool /* if true, then show it, otherwise hide it*/)
 
 // Tells the browser to update the spelling panel with the given word.
 IPC_MESSAGE_ROUTED1(SpellCheckHostMsg_UpdateSpellingPanelWithMisspelledWord,
                     base::string16 /* the word to update the panel with */)
 #endif