Convert PDF to PWG Raster using utility process.

chrome/utility/chrome_content_utility_client.h

Index: chrome/utility/chrome_content_utility_client.h
diff --git a/chrome/utility/chrome_content_utility_client.h b/chrome/utility/chrome_content_utility_client.h
index 1e83046739d3fdaf1ed2e526ee5d2e292b4acae4..e1b40f51209556a2781fc2c488fb3612479dc1f9 100644
--- a/chrome/utility/chrome_content_utility_client.h
+++ b/chrome/utility/chrome_content_utility_client.h
@@ -54,6 +54,10 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
       const base::FilePath& metafile_path,
       const printing::PdfRenderSettings& settings,
       const std::vector<printing::PageRange>& page_ranges);
+  void OnRenderPDFPagesToPWGRaster(
+      IPC::PlatformFileForTransit pdf_transit,
+      const printing::PdfRenderSettings& settings,
+      IPC::PlatformFileForTransit bitmap_transit);
   void OnRobustJPEGDecodeImage(
       const std::vector<unsigned char>& encoded_data);
   void OnParseJSON(const std::string& json);
@@ -76,6 +80,11 @@ class ChromeContentUtilityClient : public content::ContentUtilityClient {
       double* scale_factor);
 #endif   // defined(OS_WIN)
 
+  bool RenderPDFPagesToPWGRaster(
+      base::PlatformFile pdf_file,
+      const printing::PdfRenderSettings& settings,
+      base::PlatformFile bitmap_file);
+
   void OnGetPrinterCapsAndDefaults(const std::string& printer_name);
   void OnStartupPing();
   void OnAnalyzeZipFileForDownloadProtection(