Fix issues related to request and context object lifespan (issue #1037, issue #1044).

- Simplify and document the relationship between the various context object types. See browser_context.h for a description of the new relationships.
- cefclient: Add `request-context-per-browser` command-line flag for testing multiple CefRequestContext instances.
- cefclient: Add a CefURLRequest example.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@2032 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/browser/url_request_context_getter_impl.h

@@ -0,0 +1,85 @@
+// 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.
+
+#ifndef CEF_LIBCEF_BROWSER_URL_REQUEST_CONTEXT_GETTER_IMPL_H_
+#define CEF_LIBCEF_BROWSER_URL_REQUEST_CONTEXT_GETTER_IMPL_H_
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include "libcef/browser/url_request_context_getter.h"
+#include "libcef/browser/url_request_context_impl.h"
+
+#include "base/compiler_specific.h"
+#include "base/files/file_path.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/content_browser_client.h"
+#include "net/url_request/url_request_job_factory.h"
+
+namespace base {
+class MessageLoop;
+}
+
+namespace net {
+class FtpTransactionFactory;
+class ProxyConfigService;
+class URLRequestContextStorage;
+class URLRequestJobFactory;
+class URLRequestJobFactoryImpl;
+class URLSecurityManager;
+}
+
+// Global URLRequestContextGetter implementation. Life span is primarily
+// controlled by CefResourceContext and CefBrowserMainParts. Created on the UI
+// thread but accessed and destroyed on the IO thread. See browser_context.h
+// for an object relationship diagram.
+class CefURLRequestContextGetterImpl : public CefURLRequestContextGetter {
+ public:
+  CefURLRequestContextGetterImpl(
+      base::MessageLoop* io_loop,
+      base::MessageLoop* file_loop,
+      content::ProtocolHandlerMap* protocol_handlers,
+      content::URLRequestInterceptorScopedVector request_interceptors);
+  ~CefURLRequestContextGetterImpl() override;
+
+  // net::URLRequestContextGetter implementation.
+  net::URLRequestContext* GetURLRequestContext() override;
+  scoped_refptr<base::SingleThreadTaskRunner>
+      GetNetworkTaskRunner() const override;
+
+  // CefURLRequestContextGetter implementation.
+  net::HostResolver* GetHostResolver() const override;
+
+  net::URLRequestJobFactoryImpl* job_factory_impl() const {
+    return job_factory_impl_;
+  }
+
+  void SetCookieStoragePath(const base::FilePath& path,
+                            bool persist_session_cookies);
+  void SetCookieSupportedSchemes(const std::vector<std::string>& schemes);
+
+ private:
+  void CreateProxyConfigService();
+
+  base::MessageLoop* io_loop_;
+  base::MessageLoop* file_loop_;
+
+  scoped_ptr<net::ProxyConfigService> proxy_config_service_;
+  scoped_ptr<net::URLRequestContextStorage> storage_;
+  scoped_ptr<CefURLRequestContextImpl> url_request_context_;
+  scoped_ptr<net::URLSecurityManager> url_security_manager_;
+  scoped_ptr<net::FtpTransactionFactory> ftp_transaction_factory_;
+  content::ProtocolHandlerMap protocol_handlers_;
+  content::URLRequestInterceptorScopedVector request_interceptors_;
+  net::URLRequestJobFactoryImpl* job_factory_impl_;
+
+  base::FilePath cookie_store_path_;
+  std::vector<std::string> cookie_supported_schemes_;
+
+  DISALLOW_COPY_AND_ASSIGN(CefURLRequestContextGetterImpl);
+};
+
+#endif  // CEF_LIBCEF_BROWSER_URL_REQUEST_CONTEXT_GETTER_IMPL_H_