Move printing defines to buildflag system.

chrome/utility/printing_handler.h

Index: chrome/utility/printing_handler.h
diff --git a/chrome/utility/printing_handler.h b/chrome/utility/printing_handler.h
index 8d3394d53489f68691c464919f78e8c8e3bc89c9..a9fa6a086a989a91b9902686e14ca03fc844ab78 100644
--- a/chrome/utility/printing_handler.h
+++ b/chrome/utility/printing_handler.h
@@ -10,10 +10,11 @@
 #include "build/build_config.h"
 #include "chrome/utility/utility_message_handler.h"
 #include "ipc/ipc_platform_file.h"
+#include "printing/features/features.h"
 #include "printing/pdf_render_settings.h"
 
-#if !defined(ENABLE_PRINT_PREVIEW) && \
-    !(defined(ENABLE_BASIC_PRINTING) && defined(OS_WIN))
+#if !BUILDFLAG(ENABLE_PRINT_PREVIEW) && \
+    !(BUILDFLAG(ENABLE_BASIC_PRINTING) && defined(OS_WIN))
 #error "Windows basic printing or print preview must be enabled"
 #endif
 
@@ -43,7 +44,7 @@ class PrintingHandler : public UtilityMessageHandler {
       IPC::PlatformFileForTransit output_file);
   void OnRenderPDFPagesToMetafileStop();
 #endif  // OS_WIN
-#if defined(ENABLE_PRINT_PREVIEW)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   void OnRenderPDFPagesToPWGRaster(IPC::PlatformFileForTransit pdf_transit,
                                    const PdfRenderSettings& settings,
                                    const PwgRasterSettings& bitmap_settings,
@@ -56,7 +57,7 @@ class PrintingHandler : public UtilityMessageHandler {
                                base::File output_file,
                                float* scale_factor);
 #endif  // OS_WIN
-#if defined(ENABLE_PRINT_PREVIEW)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW)
   bool RenderPDFPagesToPWGRaster(base::File pdf_file,
                                  const PdfRenderSettings& settings,
                                  const PwgRasterSettings& bitmap_settings,