Simplify BrowserContext by removing redundant methods.

extensions/shell/browser/shell_oauth2_token_service_delegate.cc

 // Copyright 2015 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 "extensions/shell/browser/shell_oauth2_token_service_delegate.h"
 
 #include <vector>
 
+#include "content/public/browser/storage_partition.h"
+
 namespace extensions {
 
 ShellOAuth2TokenServiceDelegate::ShellOAuth2TokenServiceDelegate(
     content::BrowserContext* browser_context,
     std::string account_id,
     std::string refresh_token)
     : browser_context_(browser_context),
       account_id_(account_id),
       refresh_token_(refresh_token) {
 }
@@ skipping 14 matching lines @@
     const std::string& account_id,
     net::URLRequestContextGetter* getter,
     OAuth2AccessTokenConsumer* consumer) {
   DCHECK_EQ(account_id, account_id_);
   DCHECK(!refresh_token_.empty());
   return new OAuth2AccessTokenFetcherImpl(consumer, getter, refresh_token_);
 }
 
 net::URLRequestContextGetter*
 ShellOAuth2TokenServiceDelegate::GetRequestContext() const {
-  return browser_context_->GetRequestContext();
+  return content::BrowserContext::GetDefaultStoragePartition(browser_context_)->
+      GetURLRequestContext();
 }
 
 std::vector<std::string> ShellOAuth2TokenServiceDelegate::GetAccounts() {
   std::vector<std::string> accounts;
   accounts.push_back(account_id_);
   return accounts;
 }
 
 void ShellOAuth2TokenServiceDelegate::UpdateCredentials(
     const std::string& account_id,
     const std::string& refresh_token) {
   account_id_ = account_id;
   refresh_token_ = refresh_token;
 }
 
 }  // namespace extensions