Add PDF compositor service

content/utility/utility_service_factory.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 "content/utility/utility_service_factory.h"
 
+#include <memory>
+#include <utility>
+
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "content/child/child_process.h"
 #include "content/network/network_service.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/service_names.mojom.h"
 #include "content/public/utility/content_utility_client.h"
 #include "content/public/utility/utility_thread.h"
 #include "content/utility/utility_thread_impl.h"
+#include "printing/features/features.h"
 #include "services/data_decoder/data_decoder_service.h"
 #include "services/data_decoder/public/interfaces/constants.mojom.h"
 #include "services/shape_detection/public/interfaces/constants.mojom.h"
 #include "services/shape_detection/shape_detection_service.h"
 
 #if defined(ENABLE_MOJO_MEDIA_IN_UTILITY_PROCESS)
 #include "media/mojo/services/media_service_factory.h"  // nogncheck
 #endif
 
+#if BUILDFLAG(ENABLE_PRINTING)
+// nogncheck because dependency on //printing is conditional upon

[jam, 2017/04/24 15:18:05]

content/ currently doesn't know about components/printing, since that's at the
chrome layer.

can we keep the same layering, i.e. have this printing service be registered by
src/chrome/utility?

[Wei Li, 2017/04/27 05:34:16]

Done.

+// enable_basic_printing or enable_print_preview flags.
+#include "components/printing/service/pdf_compositor_service.h"  // nogncheck
+#include "components/printing/service/public/interfaces/pdf_compositor.mojom.h"  // nogncheck
+#endif
+
 namespace content {
 
 namespace {
 
 std::unique_ptr<service_manager::Service> CreateDataDecoderService() {
   content::UtilityThread::Get()->EnsureBlinkInitialized();
   return data_decoder::DataDecoderService::Create();
 }
 
+#if BUILDFLAG(ENABLE_PRINTING)
+std::unique_ptr<service_manager::Service> CreatePdfCompositorService() {
+  content::UtilityThread::Get()->EnsureBlinkInitialized();
+  content::UtilityThread::Get()->EnsureReadyForSkia();
+  return printing::PdfCompositorService::Create(
+      GetContentClient()->GetUserAgent(),
+      ChildProcess::current()->io_task_runner());
+}
+#endif
+
 }  // namespace
 
 UtilityServiceFactory::UtilityServiceFactory() {}
 
 UtilityServiceFactory::~UtilityServiceFactory() {}
 
 void UtilityServiceFactory::RegisterServices(ServiceMap* services) {
   GetContentClient()->utility()->RegisterServices(services);
 
 #if defined(ENABLE_MOJO_MEDIA_IN_UTILITY_PROCESS)
@@ skipping 13 matching lines @@
       std::make_pair(data_decoder::mojom::kServiceName, data_decoder_info));
 
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableNetworkService)) {
     ServiceInfo network_info;
     network_info.factory = base::Bind(&NetworkService::CreateNetworkService);
     network_info.task_runner = ChildProcess::current()->io_task_runner();
     services->insert(
         std::make_pair(content::mojom::kNetworkServiceName, network_info));
   }
+
+#if BUILDFLAG(ENABLE_PRINTING)
+  ServiceInfo pdf_compositor_info;
+  pdf_compositor_info.factory = base::Bind(&CreatePdfCompositorService);
+  services->insert(
+      std::make_pair(printing::mojom::kServiceName, pdf_compositor_info));
+#endif
 }
 
 void UtilityServiceFactory::OnServiceQuit() {
   UtilityThread::Get()->ReleaseProcessIfNeeded();
 }
 
 void UtilityServiceFactory::OnLoadFailed() {
   UtilityThreadImpl* utility_thread =
       static_cast<UtilityThreadImpl*>(UtilityThread::Get());
   utility_thread->Shutdown();
   utility_thread->ReleaseProcessIfNeeded();
 }
 
 }  // namespace content