Remove uses of base::hash_map from //chrome

chrome/renderer/tts_dispatcher.cc

 // Copyright (c) 2013 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 "chrome/renderer/tts_dispatcher.h"
 
 #include <stddef.h>
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/common/tts_messages.h"
@@ skipping 68 matching lines @@
 
 void TtsDispatcher::Resume() {
   RenderThread::Get()->Send(new TtsHostMsg_Resume());
 }
 
 void TtsDispatcher::Cancel() {
   RenderThread::Get()->Send(new TtsHostMsg_Cancel());
 }
 
 WebSpeechSynthesisUtterance TtsDispatcher::FindUtterance(int utterance_id) {
-  base::hash_map<int, WebSpeechSynthesisUtterance>::const_iterator iter =
-      utterance_id_map_.find(utterance_id);
+  const auto iter = utterance_id_map_.find(utterance_id);
   if (iter == utterance_id_map_.end())
     return WebSpeechSynthesisUtterance();
   return iter->second;
 }
 
 void TtsDispatcher::OnSetVoiceList(const std::vector<TtsVoice>& voices) {
   WebVector<WebSpeechSynthesisVoice> out_voices(voices.size());
   for (size_t i = 0; i < voices.size(); ++i) {
     out_voices[i] = WebSpeechSynthesisVoice();
     out_voices[i].SetVoiceURI(WebString::FromUTF8(voices[i].voice_uri));
@@ skipping 90 matching lines @@
 void TtsDispatcher::OnSpeakingErrorOccurred(int utterance_id,
                                             const std::string& error_message) {
   WebSpeechSynthesisUtterance utterance = FindUtterance(utterance_id);
   if (utterance.IsNull())
     return;
 
   // The web speech API doesn't support an error message.
   synthesizer_client_->SpeakingErrorOccurred(utterance);
   utterance_id_map_.erase(utterance_id);
 }