add customized printing setting for headless

headless/lib/headless_content_main_delegate.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/headless_content_main_delegate.h"
 
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
@@ skipping 16 matching lines @@
 #include "ui/base/ui_base_switches.h"
 #include "ui/gfx/switches.h"
 #include "ui/gl/gl_switches.h"
 #include "ui/ozone/public/ozone_switches.h"
 
 #ifdef HEADLESS_USE_EMBEDDED_RESOURCES
 #include "headless/embedded_resource_pak.h"
 #endif
 
 #if defined(OS_MACOSX)
+#include "base/mac/bundle_locations.h"
+#else
+#include "ui/base/ui_base_paths.h"
+#endif
+
+#if defined(OS_MACOSX)
 #include "components/crash/content/app/crashpad.h"
 #endif
 
 namespace headless {
 namespace {
 // Keep in sync with content/common/content_constants_internal.h.
 // TODO(skyostil): Add a tracing test for this.
 const int kTraceEventBrowserProcessSortIndex = -6;
 
 HeadlessContentMainDelegate* g_current_headless_content_main_delegate = nullptr;
@@ skipping 190 matching lines @@
   return g_current_headless_content_main_delegate;
 }
 
 // static
 void HeadlessContentMainDelegate::InitializeResourceBundle() {
   base::FilePath dir_module;
   base::FilePath pak_file;
   bool result = PathService::Get(base::DIR_MODULE, &dir_module);
   DCHECK(result);
 
+  // Override locale pak dir to 'headless_locales'.
+  base::FilePath locale_pak =
+      dir_module.Append(FILE_PATH_LITERAL("headless_locales"));
+#if defined(OS_MACOSX)
+  base::mac::SetOverrideFrameworkBundlePath(locale_pak);
+#else
+  PathService::Override(ui::DIR_LOCALES, locale_pak);
+#endif
+
   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
   const std::string locale = command_line->GetSwitchValueASCII(switches::kLang);
   ui::ResourceBundle::InitSharedInstanceWithLocale(
       locale, nullptr, ui::ResourceBundle::DO_NOT_LOAD_COMMON_RESOURCES);
 
 #ifdef HEADLESS_USE_EMBEDDED_RESOURCES
   ResourceBundle::GetSharedInstance().AddDataPackFromBuffer(
       base::StringPiece(
           reinterpret_cast<const char*>(kHeadlessResourcePak.contents),
           kHeadlessResourcePak.length),
@@ skipping 23 matching lines @@
   return browser_client_.get();
 }
 
 content::ContentRendererClient*
 HeadlessContentMainDelegate::CreateContentRendererClient() {
   renderer_client_ = base::MakeUnique<HeadlessContentRendererClient>();
   return renderer_client_.get();
 }
 
 }  // namespace headless