Windows: Make it possible to print text with GDI.

chrome/common/chrome_utility_printing_messages.h

 // Copyright 2014 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.
 
 // Multiply-included message file, so no include guard.
 
 #include <string>
 #include <vector>
 
+#include "base/strings/string16.h"
 #include "build/build_config.h"
 #include "components/printing/common/printing_param_traits_macros.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_platform_file.h"
 #include "printing/backend/print_backend.h"
 #include "printing/page_range.h"
 #include "printing/pdf_render_settings.h"
 #include "printing/pwg_raster_settings.h"
 
+#if defined(OS_WIN)
+#include <windows.h>
+#endif
+
 #define IPC_MESSAGE_START ChromeUtilityPrintingMsgStart
 
 // Preview and Cloud Print messages.
 #if defined(ENABLE_PRINT_PREVIEW)
 IPC_STRUCT_TRAITS_BEGIN(printing::PrinterCapsAndDefaults)
   IPC_STRUCT_TRAITS_MEMBER(printer_capabilities)
   IPC_STRUCT_TRAITS_MEMBER(caps_mime_type)
   IPC_STRUCT_TRAITS_MEMBER(printer_defaults)
   IPC_STRUCT_TRAITS_MEMBER(defaults_mime_type)
 IPC_STRUCT_TRAITS_END()
@@ skipping 30 matching lines @@
   IPC_STRUCT_TRAITS_MEMBER(rotate_all_pages)
   IPC_STRUCT_TRAITS_MEMBER(reverse_page_order)
 IPC_STRUCT_TRAITS_END()
 
 //------------------------------------------------------------------------------
 // Utility process messages:
 // These are messages from the browser to the utility process.
 
 // Tell the utility process to render the given PDF into a PWGRaster.
 IPC_MESSAGE_CONTROL4(ChromeUtilityMsg_RenderPDFPagesToPWGRaster,
-                     IPC::PlatformFileForTransit, /* Input PDF file */
-                     printing::PdfRenderSettings, /* PDF render settings */
+                     IPC::PlatformFileForTransit /* Input PDF file */,
+                     printing::PdfRenderSettings /* PDF render settings */,
                      // PWG transform settings.
                      printing::PwgRasterSettings,
                      IPC::PlatformFileForTransit /* Output PWG file */)
 
 // Tells the utility process to get capabilities and defaults for the specified
 // printer. Used on Windows to isolate the service process from printer driver
 // crashes by executing this in a separate process. This does not run in a
 // sandbox.
 IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_GetPrinterCapsAndDefaults,
                      std::string /* printer name */)
 
 // Tells the utility process to get capabilities and defaults for the specified
 // printer. Used on Windows to isolate the service process from printer driver
 // crashes by executing this in a separate process. This does not run in a
 // sandbox. Returns result as printing::PrinterSemanticCapsAndDefaults.
 IPC_MESSAGE_CONTROL1(ChromeUtilityMsg_GetPrinterSemanticCapsAndDefaults,
                      std::string /* printer name */)
 #endif  // ENABLE_PRINT_PREVIEW
 
 // Windows uses messages for printing even without preview. crbug.com/170859
 // Primary user of Windows without preview is CEF. crbug.com/417967
 #if defined(ENABLE_PRINTING) && defined(OS_WIN)
 // Tell the utility process to start rendering the given PDF into a metafile.
 // Utility process would be alive until
 // ChromeUtilityMsg_RenderPDFPagesToMetafiles_Stop message.
-IPC_MESSAGE_CONTROL2(ChromeUtilityMsg_RenderPDFPagesToMetafiles,
-                     IPC::PlatformFileForTransit, /* input_file */
-                     printing::PdfRenderSettings /* settings */)
+IPC_MESSAGE_CONTROL3(ChromeUtilityMsg_RenderPDFPagesToMetafiles,
+                     IPC::PlatformFileForTransit /* input_file */,
+                     printing::PdfRenderSettings /* settings */,
+                     bool /* print_text_with_gdi */)
 
 // Requests conversion of the next page.
 IPC_MESSAGE_CONTROL2(ChromeUtilityMsg_RenderPDFPagesToMetafiles_GetPage,
                      int /* page_number */,
                      IPC::PlatformFileForTransit /* output_file */)
 
 // Requests utility process to stop conversion and exit.
 IPC_MESSAGE_CONTROL0(ChromeUtilityMsg_RenderPDFPagesToMetafiles_Stop)
 #endif  // ENABLE_PRINTING && OS_WIN
 
@@ skipping 36 matching lines @@
 #if defined(ENABLE_PRINTING) && defined(OS_WIN)
 // Reply when the utility process loaded PDF. |page_count| is 0, if loading
 // failed.
 IPC_MESSAGE_CONTROL1(ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageCount,
                      int /* page_count */)
 
 // Reply when the utility process rendered the PDF page.
 IPC_MESSAGE_CONTROL2(ChromeUtilityHostMsg_RenderPDFPagesToMetafiles_PageDone,
                      bool /* success */,
                      float /* scale_factor */)
+
+// Request that the given font characters be loaded by the browser so it's
+// cached by the OS. Please see
+// PdfToEmfUtilityProcessHostClient::OnPreCacheFontCharacters for details.
+IPC_SYNC_MESSAGE_CONTROL2_0(ChromeUtilityHostMsg_PreCacheFontCharacters,
+                            LOGFONT /* font_data */,
+                            base::string16 /* characters */)
+
 #endif  // ENABLE_PRINTING && OS_WIN