Convert Spellcheck host MessageFilter IPC to mojo

components/spellcheck/renderer/hunspell_engine.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 "components/spellcheck/renderer/hunspell_engine.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
 #include "base/files/memory_mapped_file.h"
 #include "base/time/time.h"
+#include "components/spellcheck/common/spellcheck.mojom.h"
 #include "components/spellcheck/common/spellcheck_common.h"
 #include "components/spellcheck/common/spellcheck_messages.h"
 #include "components/spellcheck/spellcheck_build_features.h"
+#include "content/public/common/service_names.mojom.h"
 #include "content/public/renderer/render_thread.h"
+#include "services/service_manager/public/cpp/connector.h"
 #include "third_party/hunspell/src/hunspell/hunspell.hxx"
 
 using content::RenderThread;
 
 namespace {
   // Maximum length of words we actually check.
   // 64 is the observed limits for OSX system checker.
   const size_t kMaxCheckedLen = 64;
 
   // Maximum length of words we provide suggestions for.
@@ skipping 84 matching lines @@
   // Populate the vector of WideStrings.
   for (size_t i = 0; i < suggestions.size(); ++i) {
     if (i < spellcheck::kMaxSuggestions)
       optional_suggestions->push_back(base::UTF8ToUTF16(suggestions[i]));
   }
 }
 
 bool HunspellEngine::InitializeIfNeeded() {
   if (!initialized_ && !dictionary_requested_) {
     // RenderThread will not exist in test.
-    if (RenderThread::Get())
-      RenderThread::Get()->Send(new SpellCheckHostMsg_RequestDictionary);
+    if (RenderThread::Get()) {
+      spellcheck::mojom::SpellCheckHostPtr spellcheck_host;
+      RenderThread::Get()->GetConnector()->BindInterface(
+          content::mojom::kBrowserServiceName, &spellcheck_host);
+      spellcheck_host->RequestDictionary();
+    }
     dictionary_requested_ = true;
     return true;
   }
 
   // Don't initialize if hunspell is disabled.
   if (file_.IsValid())
     InitializeHunspell();
 
   return !initialized_;
 }
 
 bool HunspellEngine::IsEnabled() {
   return hunspell_enabled_;
 }