headless: Initial headless embedder API implementation

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 "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 {
+
+HeadlessBrowserContext::HeadlessBrowserContext(
+    const 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());
+  }
+}
+
+HeadlessBrowserContext::HeadlessResourceContext::HeadlessResourceContext()
+    : getter_(nullptr) {}
+
+HeadlessBrowserContext::HeadlessResourceContext::~HeadlessResourceContext() {}
+
+net::HostResolver*
+HeadlessBrowserContext::HeadlessResourceContext::GetHostResolver() {
+  CHECK(getter_);
+  return getter_->GetURLRequestContext()->host_resolver();
+}
+
+net::URLRequestContext*
+HeadlessBrowserContext::HeadlessResourceContext::GetRequestContext() {
+  CHECK(getter_);
+  return getter_->GetURLRequestContext();
+}
+
+void HeadlessBrowserContext::InitWhileIOAllowed() {
+  // TODO(skyostil): Allow the embedder to override this.
+  PathService::Get(base::DIR_EXE, &path_);
+}
+
+scoped_ptr<content::ZoomLevelDelegate>
+HeadlessBrowserContext::CreateZoomLevelDelegate(
+    const base::FilePath& partition_path) {
+  return scoped_ptr<content::ZoomLevelDelegate>();
+}
+
+base::FilePath HeadlessBrowserContext::GetPath() const {
+  return path_;
+}
+
+bool HeadlessBrowserContext::IsOffTheRecord() const {
+  return false;
+}
+
+net::URLRequestContextGetter* HeadlessBrowserContext::GetRequestContext() {
+  return GetDefaultStoragePartition(this)->GetURLRequestContext();
+}
+
+net::URLRequestContextGetter*
+HeadlessBrowserContext::GetRequestContextForRenderProcess(
+    int renderer_child_id) {
+  return GetRequestContext();
+}
+
+net::URLRequestContextGetter* HeadlessBrowserContext::GetMediaRequestContext() {
+  return GetRequestContext();
+}
+
+net::URLRequestContextGetter*
+HeadlessBrowserContext::GetMediaRequestContextForRenderProcess(
+    int renderer_child_id) {
+  return GetRequestContext();
+}
+
+net::URLRequestContextGetter*
+HeadlessBrowserContext::GetMediaRequestContextForStoragePartition(
+    const base::FilePath& partition_path,
+    bool in_memory) {
+  return GetRequestContext();
+}
+
+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) {
+  DCHECK(!url_request_getter_.get());
+  if (options().url_request_context_getter) {
+    url_request_getter_ = options().url_request_context_getter;
+  } else {
+    url_request_getter_ = CreateURLRequestContextGetter(
+        protocol_handlers, std::move(request_interceptors));
+  }
+  resource_context_->set_url_request_context_getter(url_request_getter_.get());
+  return url_request_getter_.get();
+}
+
+HeadlessURLRequestContextGetter*
+HeadlessBrowserContext::CreateURLRequestContextGetter(
+    content::ProtocolHandlerMap* protocol_handlers,
+    content::URLRequestInterceptorScopedVector request_interceptors) {
+  return new HeadlessURLRequestContextGetter(
+      true /* ignore_certificate_errors */, GetPath(),
+      content::BrowserThread::UnsafeGetMessageLoopForThread(
+          content::BrowserThread::IO),
+      content::BrowserThread::UnsafeGetMessageLoopForThread(
+          content::BrowserThread::FILE),
+      protocol_handlers, std::move(request_interceptors), nullptr /* net_log */,
+      options());
+}
+
+}  // namespace headless