Remove use of default request context and fix use of speech censor flag

chrome/browser/speech/chrome_speech_input_preferences.cc

+// Copyright (c) 2011 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/browser/speech/chrome_speech_input_preferences.h"
+
+#include "base/bind.h"
+#include "chrome/browser/prefs/pref_service.h"
+#include "chrome/common/pref_names.h"
+#include "content/browser/browser_thread.h"
+
+ChromeSpeechInputPreferences::ChromeSpeechInputPreferences(
+    PrefService* pref_service)
+    : censor_results_(
+          pref_service->GetBoolean(prefs::kSpeechInputCensorResults)) {
+}
+
+ChromeSpeechInputPreferences::~ChromeSpeechInputPreferences() {
+}
+
+bool ChromeSpeechInputPreferences::censor_results() const {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  return censor_results_;
+}
+
+void ChromeSpeechInputPreferences::set_censor_results(bool censor_results) {
+  if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
+    BrowserThread::PostTask(
+        BrowserThread::IO, FROM_HERE,
+        base::Bind(&ChromeSpeechInputPreferences::set_censor_results,
+                   this, censor_results));
+    return;
+  }
+  censor_results_ = censor_results;
+}