headless: Introduce a browser context

headless/lib/browser/headless_browser_context.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 "headless/lib/browser/headless_browser_context.h"
-
-#include <memory>
-
-#include "base/path_service.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/resource_context.h"
-#include "content/public/browser/storage_partition.h"
-#include "headless/lib/browser/headless_url_request_context_getter.h"
-#include "net/url_request/url_request_context.h"
-
-namespace headless {
-
-// Contains net::URLRequestContextGetter required for resource loading.
-// Must be destructed on the IO thread as per content::ResourceContext
-// requirements.
-class HeadlessResourceContext : public content::ResourceContext {
- public:
-  HeadlessResourceContext();
-  ~HeadlessResourceContext() override;
-
-  // ResourceContext implementation:
-  net::HostResolver* GetHostResolver() override;
-  net::URLRequestContext* GetRequestContext() override;
-
-  // Configure the URL request context getter to be used for resource fetching.
-  // Must be called before any of the other methods of this class are used. Must
-  // be called on the browser UI thread.
-  void set_url_request_context_getter(
-      scoped_refptr<net::URLRequestContextGetter> url_request_context_getter) {
-    DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-    url_request_context_getter_ = std::move(url_request_context_getter);
-  }
-
-  net::URLRequestContextGetter* url_request_context_getter() {
-    return url_request_context_getter_.get();
-  }
-
- private:
-  scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
-
-  DISALLOW_COPY_AND_ASSIGN(HeadlessResourceContext);
-};
-
-HeadlessResourceContext::HeadlessResourceContext() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
-}
-
-HeadlessResourceContext::~HeadlessResourceContext() {
-  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::IO));
-}
-
-net::HostResolver* HeadlessResourceContext::GetHostResolver() {
-  CHECK(url_request_context_getter_);
-  return url_request_context_getter_->GetURLRequestContext()->host_resolver();
-}
-
-net::URLRequestContext* HeadlessResourceContext::GetRequestContext() {
-  CHECK(url_request_context_getter_);
-  return url_request_context_getter_->GetURLRequestContext();
-}
-
-HeadlessBrowserContext::HeadlessBrowserContext(
-    HeadlessBrowser::Options* options)
-    : resource_context_(new HeadlessResourceContext), options_(options) {
-  InitWhileIOAllowed();
-}
-
-HeadlessBrowserContext::~HeadlessBrowserContext() {
-  if (resource_context_) {
-    content::BrowserThread::DeleteSoon(content::BrowserThread::IO, FROM_HERE,
-                                       resource_context_.release());
-  }
-}
-
-void HeadlessBrowserContext::InitWhileIOAllowed() {
-  // TODO(skyostil): Allow the embedder to override this.
-  PathService::Get(base::DIR_EXE, &path_);
-  BrowserContext::Initialize(this, path_);
-}
-
-std::unique_ptr<content::ZoomLevelDelegate>
-HeadlessBrowserContext::CreateZoomLevelDelegate(
-    const base::FilePath& partition_path) {
-  return std::unique_ptr<content::ZoomLevelDelegate>();
-}
-
-base::FilePath HeadlessBrowserContext::GetPath() const {
-  return path_;
-}
-
-bool HeadlessBrowserContext::IsOffTheRecord() const {
-  return false;
-}
-
-content::ResourceContext* HeadlessBrowserContext::GetResourceContext() {
-  return resource_context_.get();
-}
-
-content::DownloadManagerDelegate*
-HeadlessBrowserContext::GetDownloadManagerDelegate() {
-  return nullptr;
-}
-
-content::BrowserPluginGuestManager* HeadlessBrowserContext::GetGuestManager() {
-  // TODO(altimin): Should be non-null? (is null in content/shell).
-  return nullptr;
-}
-
-storage::SpecialStoragePolicy*
-HeadlessBrowserContext::GetSpecialStoragePolicy() {
-  return nullptr;
-}
-
-content::PushMessagingService*
-HeadlessBrowserContext::GetPushMessagingService() {
-  return nullptr;
-}
-
-content::SSLHostStateDelegate*
-HeadlessBrowserContext::GetSSLHostStateDelegate() {
-  return nullptr;
-}
-
-content::PermissionManager* HeadlessBrowserContext::GetPermissionManager() {
-  return nullptr;
-}
-
-content::BackgroundSyncController*
-HeadlessBrowserContext::GetBackgroundSyncController() {
-  return nullptr;
-}
-
-net::URLRequestContextGetter* HeadlessBrowserContext::CreateRequestContext(
-    content::ProtocolHandlerMap* protocol_handlers,
-    content::URLRequestInterceptorScopedVector request_interceptors) {
-  scoped_refptr<HeadlessURLRequestContextGetter> url_request_context_getter(
-      new HeadlessURLRequestContextGetter(
-          content::BrowserThread::GetMessageLoopProxyForThread(
-              content::BrowserThread::IO),
-          content::BrowserThread::GetMessageLoopProxyForThread(
-              content::BrowserThread::FILE),
-          protocol_handlers, std::move(request_interceptors), options()));
-  resource_context_->set_url_request_context_getter(url_request_context_getter);
-  return url_request_context_getter.get();
-}
-
-net::URLRequestContextGetter*
-HeadlessBrowserContext::CreateRequestContextForStoragePartition(
-    const base::FilePath& partition_path,
-    bool in_memory,
-    content::ProtocolHandlerMap* protocol_handlers,
-    content::URLRequestInterceptorScopedVector request_interceptors) {
-  return nullptr;
-}
-
-net::URLRequestContextGetter*
-HeadlessBrowserContext::CreateMediaRequestContext() {
-  return resource_context_->url_request_context_getter();
-}
-
-net::URLRequestContextGetter*
-HeadlessBrowserContext::CreateMediaRequestContextForStoragePartition(
-    const base::FilePath& partition_path,
-    bool in_memory) {
-  return nullptr;
-}
-
-void HeadlessBrowserContext::SetOptionsForTesting(
-    HeadlessBrowser::Options* options) {
-  options_ = options;
-}
-
-}  // namespace headless