PrintingHandler in utility process is required for Windows even without full printing.

chrome/utility/chrome_content_utility_client.cc

 // Copyright (c) 2012 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 "chrome/utility/chrome_content_utility_client.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/time/time.h"
@@ skipping 21 matching lines @@
 #endif
 
 #if defined(ENABLE_EXTENSIONS)
 #include "chrome/common/extensions/chrome_utility_extensions_messages.h"
 #include "chrome/utility/extensions/extensions_handler.h"
 #include "chrome/utility/image_writer/image_writer_handler.h"
 #include "chrome/utility/media_galleries/ipc_data_source.h"
 #include "chrome/utility/media_galleries/media_metadata_parser.h"
 #endif
 
-#if defined(ENABLE_FULL_PRINTING)
+#if defined(ENABLE_FULL_PRINTING) || defined(OS_WIN)
 #include "chrome/utility/printing_handler.h"
 #endif
 
 #if defined(ENABLE_MDNS)
 #include "chrome/utility/local_discovery/service_discovery_message_handler.h"
 #endif
 
 namespace {
 
 bool Send(IPC::Message* message) {
@@ skipping 21 matching lines @@
     : filter_messages_(false) {
 #if !defined(OS_ANDROID)
   handlers_.push_back(new ProfileImportHandler());
 #endif
 
 #if defined(ENABLE_EXTENSIONS)
   handlers_.push_back(new extensions::ExtensionsHandler());
   handlers_.push_back(new image_writer::ImageWriterHandler());
 #endif
 
-#if defined(ENABLE_FULL_PRINTING)
+#if defined(ENABLE_FULL_PRINTING) || defined(OS_WIN)
   handlers_.push_back(new PrintingHandler());
 #endif
 
 #if defined(ENABLE_MDNS)
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUtilityProcessEnableMDns)) {
     handlers_.push_back(new local_discovery::ServiceDiscoveryMessageHandler());
   }
 #endif
 
@@ skipping 58 matching lines @@
 
   return handled;
 }
 
 // static
 void ChromeContentUtilityClient::PreSandboxStartup() {
 #if defined(ENABLE_EXTENSIONS)
   extensions::ExtensionsHandler::PreSandboxStartup();
 #endif
 
-#if defined(ENABLE_FULL_PRINTING)
+#if defined(ENABLE_FULL_PRINTING) || defined(OS_WIN)
   PrintingHandler::PreSandboxStartup();
 #endif
 
 #if defined(ENABLE_MDNS)
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUtilityProcessEnableMDns)) {
     local_discovery::ServiceDiscoveryMessageHandler::PreSandboxStartup();
   }
 #endif  // ENABLE_MDNS
 }
@@ skipping 136 matching lines @@
     const std::string& mime_type, int64 total_size, bool get_attached_images) {
   // Only one IPCDataSource may be created and added to the list of handlers.
   metadata::IPCDataSource* source = new metadata::IPCDataSource(total_size);
   handlers_.push_back(source);
 
   metadata::MediaMetadataParser* parser = new metadata::MediaMetadataParser(
       source, mime_type, get_attached_images);
   parser->Start(base::Bind(&FinishParseMediaMetadata, base::Owned(parser)));
 }
 #endif