ash_shell: Fix a crash when creating a WebView in the views-examples window.

ash/shell/content_client/shell_content_browser_client.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 "ash/shell/content_client/shell_content_browser_client.h"
 
 #include "ash/shell/content_client/shell_browser_main_parts.h"
+#include "content/shell/shell_browser_context.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
 namespace ash {
 namespace shell {
 
 ShellContentBrowserClient::ShellContentBrowserClient()
     : shell_browser_main_parts_(NULL) {
 }
 
 ShellContentBrowserClient::~ShellContentBrowserClient() {
 }
 
 content::BrowserMainParts* ShellContentBrowserClient::CreateBrowserMainParts(
     const content::MainFunctionParams& parameters) {
   shell_browser_main_parts_ =  new ShellBrowserMainParts(parameters);
   return shell_browser_main_parts_;
 }
 
+net::URLRequestContextGetter* ShellContentBrowserClient::CreateRequestContext(
+    content::BrowserContext* content_browser_context,
+    content::ProtocolHandlerMap* protocol_handlers) {
+  content::ShellBrowserContext* shell_context =
+      static_cast<content::ShellBrowserContext*>(content_browser_context);
+  return shell_context->CreateRequestContext(protocol_handlers);
+}
+
 content::ShellBrowserContext* ShellContentBrowserClient::browser_context() {
   return shell_browser_main_parts_->browser_context();
 }
 
 }  // namespace examples
 }  // namespace views