Add ability to detect support for OpenXPS

Windows printing path is being modernized from using the pre-WinXP
GDI print API to an XPS-based API.  This was first introduced
introduced Windows 7 and was deprecated in favor of OpenXPS in
Windows 8 and beyond.  Some Windows 7 installations may be capable of
OpenXPS if they have been sufficiently patched [1].

Need ability to determine the Windows XPS API version required for
interfacing with the print subsystem.

[1] https://docs.microsoft.com/en-us/windows/win32/printdocs/app-support-for-openxps-printing#sending-xps-data-to-the-print-system

Bug: 1008222
Change-Id: Ieb82ec5ef13ecff17c10b16284132bc45aa64dc3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1826006Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Alan Screen <awscreen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#702142}

printing/backend/win_helper.cc

@@ -12,6 +12,7 @@
 
 #include "base/debug/alias.h"
 #include "base/file_version_info.h"
+#include "base/file_version_info_win.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/memory/free_deleter.h"
@@ -128,6 +129,19 @@ const char kXpsTicketTemplate[] =
 const char kXpsTicketColor[] = "Color";
 const char kXpsTicketMonochrome[] = "Monochrome";
 
+bool IsOpenXpsCapableImpl() {
+  std::unique_ptr<FileVersionInfoWin> file_version_info =
+      FileVersionInfoWin::CreateFileVersionInfoWin(
+          base::FilePath(FILE_PATH_LITERAL("xpsprint.dll")));
+  if (!file_version_info)
+    return false;  // Cannot support OpenXPS without system support.
+
+  // Need at least version 6.2.9200.16492 to support OpenXPS, per:
+  // https://support.microsoft.com/en-us/help/2670838/platform-update-for-windows-7-sp1-and-windows-server-2008-r2-sp1
+  const base::Version kOpenXpsMinVersion("6.2.9200.16492");
+  return file_version_info->GetFileVersion() >= kOpenXpsMinVersion;
+}
+
 }  // namespace
 
 namespace printing {
@@ -152,6 +166,14 @@ bool ScopedPrinterHandle::OpenPrinterWithName(const wchar_t* printer) {
   return IsValid();
 }
 
+// static
+bool XPSModule::IsOpenXpsCapable() {
+  // TODO(awscreen): Can be removed once Chrome drops support for Windows 7,
+  // since everything from Windows 8 onward is all OpenXPS.
+  static const bool capable = IsOpenXpsCapableImpl();
+  return capable;
+}
+
 bool XPSModule::Init() {
   static bool initialized = InitImpl();
   return initialized;

printing/backend/win_helper.h

@@ -76,6 +76,9 @@ using ScopedPrinterChangeHandle =
 // route instead).
 class PRINTING_EXPORT XPSModule {
  public:
+  // Returns true if OpenXPS printing is supported.
+  static bool IsOpenXpsCapable();
+
   // All the other methods can ONLY be called after a successful call to Init.
   // Init can be called many times and by multiple threads.
   static bool Init();