Printing: Remove check for Windows RPCS printers

Now that we check for invalid paper sizes, we no longer need the RPCS
driver check to prevent crashes on Win10. This will also fix breakage
of Japanese RPCS drivers that support Win10.

BUG=730919

Review-Url: https://codereview.chromium.org/2932043002
Cr-Commit-Position: refs/heads/master@{#478172}

printing/backend/win_helper.cc

@@ -471,17 +471,6 @@ std::unique_ptr<DEVMODE, base::FreeDeleter> CreateDevModeWithColor(
   return ticket;
 }
 
-bool IsPrinterRPCSOnly(const wchar_t* name, const wchar_t* port) {
-  int num_languages =
-      DeviceCapabilities(name, port, DC_PERSONALITY, NULL, NULL);
-  if (num_languages != 1)
-    return false;
-  std::vector<wchar_t> buf(33, 0);
-  DeviceCapabilities(name, port, DC_PERSONALITY, buf.data(), NULL);
-  static constexpr wchar_t kRPCSLanguage[] = L"RPCS";
-  return wcscmp(buf.data(), kRPCSLanguage) == 0;
-}
-
 bool PrinterHasValidPaperSize(const wchar_t* name, const wchar_t* port) {
   return DeviceCapabilities(name, port, DC_PAPERSIZE, nullptr, nullptr) > 0;
 }
@@ -507,14 +496,10 @@ std::unique_ptr<DEVMODE, base::FreeDeleter> CreateDevMode(HANDLE printer,
   const wchar_t* name = info_5.get()->pPrinterName;
   const wchar_t* port = info_5.get()->pPortName;
 
-  // Check for RPCS drivers on Windows 8+ as DocumentProperties will crash if
-  // called on one of these printers. See crbug.com/679160.
-  // Also check that valid paper sizes exist; some old drivers return no paper
-  // sizes and crash in DocumentProperties if used with Win10. See
+  // Check that valid paper sizes exist; some old drivers return no paper sizes
+  // and crash in DocumentProperties if used with Win10. See crbug.com/679160,
   // crbug.com/724595
-  if ((base::win::GetVersion() >= base::win::VERSION_WIN8 &&
-       IsPrinterRPCSOnly(name, port)) ||
-      !PrinterHasValidPaperSize(name, port)) {
+  if (!PrinterHasValidPaperSize(name, port)) {
     return nullptr;
   }