Move enable_pdf to a buildflag header.

chrome/app/chrome_main_delegate.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/app/chrome_main_delegate.h"
 
 #include <stddef.h>
 #include <string>
 
 #include "base/base_paths.h"
@@ skipping 33 matching lines @@
 #include "chrome/renderer/chrome_content_renderer_client.h"
 #include "chrome/utility/chrome_content_utility_client.h"
 #include "components/component_updater/component_updater_paths.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/crash/content/app/crash_reporter_client.h"
 #include "components/version_info/version_info.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/common/constants.h"
+#include "pdf/features.h"
 #include "ppapi/features/features.h"
 #include "printing/features/features.h"
 #include "ui/base/material_design/material_design_controller.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_WIN)
 #include <atlbase.h>
 #include <malloc.h>
 #include <algorithm>
@@ skipping 854 matching lines @@
   SuppressWindowsErrorDialogs();
 #endif
 
 #if defined(CHROME_MULTIPLE_DLL_CHILD) || !defined(CHROME_MULTIPLE_DLL_BROWSER)
 #if !defined(DISABLE_NACL)
   ChromeContentClient::SetNaClEntryFunctions(
       nacl_plugin::PPP_GetInterface,
       nacl_plugin::PPP_InitializeModule,
       nacl_plugin::PPP_ShutdownModule);
 #endif
-#if BUILDFLAG(ENABLE_PLUGINS) && defined(ENABLE_PDF)
+#if BUILDFLAG(ENABLE_PLUGINS) && BUILDFLAG(ENABLE_PDF)
   ChromeContentClient::SetPDFEntryFunctions(
       chrome_pdf::PPP_GetInterface,
       chrome_pdf::PPP_InitializeModule,
       chrome_pdf::PPP_ShutdownModule);
 #endif
 #endif
 }
 
 int ChromeMainDelegate::RunProcess(
     const std::string& process_type,
@@ skipping 145 matching lines @@
     case version_info::Channel::CANARY:
       return true;
     case version_info::Channel::DEV:
     case version_info::Channel::BETA:
     case version_info::Channel::STABLE:
     default:
       // Don't enable instrumentation.
       return false;
   }
 }