Delete some unused code found by -Wunused-function

chrome/browser/extensions/api/browsing_data/browsing_data_api.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.
 
 // Defines the Chrome Extensions BrowsingData API functions, which entail
 // clearing browsing data, and clearing the browser's cache (which, let's be
 // honest, are the same thing), as specified in the extension API JSON.
 
 #include "chrome/browser/extensions/api/browsing_data/browsing_data_api.h"
 
@@ skipping 36 matching lines @@
 const char kSinceKey[] = "since";
 const char kUnprotectedWebKey[] = "unprotectedWeb";
 
 // Errors!
 const char kOneAtATimeError[] = "Only one 'browsingData' API call can run at "
                                 "a time.";
 
 }  // namespace extension_browsing_data_api_constants
 
 namespace {
-// Converts the JavaScript API's numeric input (miliseconds since epoch) into an
-// appropriate base::Time that we can pass into the BrowsingDataRemove.
-bool ParseTimeFromValue(const double& ms_since_epoch, base::Time* time) {
-  return true;
-}
-
 // Given a DictionaryValue |dict|, returns either the value stored as |key|, or
 // false, if the given key doesn't exist in the dictionary.
 bool RemoveType(base::DictionaryValue* dict, const std::string& key) {
   bool value = false;
   if (!dict->GetBoolean(key, &value))
     return false;
   else
     return value;
 }
 
@@ skipping 208 matching lines @@
   return BrowsingDataRemover::REMOVE_PLUGIN_DATA;
 }
 
 int RemovePasswordsFunction::GetRemovalMask() const {
   return BrowsingDataRemover::REMOVE_PASSWORDS;
 }
 
 int RemoveWebSQLFunction::GetRemovalMask() const {
   return BrowsingDataRemover::REMOVE_WEBSQL;
 }