Use pdf compositor service for printing when OOPIF is enabled

headless/lib/browser/headless_web_contents_impl.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_web_contents_impl.h"
 
 #include <string>
 #include <utility>
 #include <vector>
 
@@ skipping 265 matching lines @@
     : content::WebContentsObserver(web_contents),
       web_contents_delegate_(new HeadlessWebContentsImpl::Delegate(this)),
       web_contents_(web_contents),
       agent_host_(content::DevToolsAgentHost::GetOrCreateFor(web_contents)),
       inject_mojo_services_into_isolated_world_(false),
       browser_context_(browser_context),
       render_process_host_(web_contents->GetMainFrame()->GetProcess()),
       weak_ptr_factory_(this) {
 #if BUILDFLAG(ENABLE_BASIC_PRINTING) && !defined(CHROME_MULTIPLE_DLL_CHILD)
   HeadlessPrintManager::CreateForWebContents(web_contents);
+// TODO(weili): Add support for printing OOPIFs.
 #endif
   web_contents->GetMutableRendererPrefs()->accept_languages =
       browser_context->options()->accept_language();
   web_contents_->SetDelegate(web_contents_delegate_.get());
   render_process_host_->AddObserver(this);
   agent_host_->AddObserver(this);
 }
 
 HeadlessWebContentsImpl::~HeadlessWebContentsImpl() {
   agent_host_->RemoveObserver(this);
@@ skipping 208 matching lines @@
     const MojoService& other) = default;
 
 HeadlessWebContents::Builder::MojoService::MojoService(
     const std::string& service_name,
     const ServiceFactoryCallback& service_factory)
     : service_name(service_name), service_factory(service_factory) {}
 
 HeadlessWebContents::Builder::MojoService::~MojoService() {}
 
 }  // namespace headless