fix: re-enable OOP printing on Linux (#46529)

patches/chromium/printing.patch

@@ -932,3 +932,19 @@ index 63f170c95050416c595e62f4c460c4cd6b7dbd1c..157e3d046889f9c63fdf0fd5d503890f
    // Does bookkeeping when an error occurs.
    virtual mojom::ResultCode OnError();
  
+diff --git a/printing/printing_context_linux.cc b/printing/printing_context_linux.cc
+index fa55d2a1c5f4207cb8eda9305e8bf2af29352c91..13ca65c2c7c3c24882061d8e224bf93899d9a7ab 100644
+--- a/printing/printing_context_linux.cc
++++ b/printing/printing_context_linux.cc
+@@ -52,9 +52,8 @@ void PrintingContextLinux::AskUserForSettings(int max_pages,
+                                               bool is_scripted,
+                                               PrintSettingsCallback callback) {
+   if (!print_dialog_) {
+-    // Can only get here if the renderer is sending bad messages.
+-    // http://crbug.com/341777
+-    NOTREACHED();
++    print_dialog_ = ui::LinuxUi::instance()->CreatePrintDialog(this);
++    print_dialog_->UseDefaultSettings();
+   }
+ 
+   print_dialog_->ShowDialog(delegate_->GetParentView(), has_selection,

shell/browser/feature_list.cc

@@ -61,14 +61,6 @@ void InitializeFeatureList() {
       std::string(",") + features::kMacWebContentsOcclusion.name;
 #endif
 
-#if BUILDFLAG(IS_LINUX) && BUILDFLAG(ENABLE_PRINTING)
-  disable_features +=
-      // EnableOopPrintDrivers is still a bit half-baked on Linux and
-      // causes crashes when trying to show dialogs.
-      // TODO(codebytere): figure out how to re-enable this with our patches.
-      std::string(",") + printing::features::kEnableOopPrintDrivers.name;
-#endif
-
 #if BUILDFLAG(ENABLE_PDF_VIEWER)
   // Enable window.showSaveFilePicker api for saving pdf files.
   // Refs https://issues.chromium.org/issues/373852607