Remove return value from PrintDialogGtkInterface::UpdateSettings().

It always returns true.

Change-Id: I25fee275c7c970dceb00dc13bd74abf1e72cea26
Reviewed-on: https://chromium-review.googlesource.com/1043053
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#556105}

chrome/browser/ui/libgtkui/print_dialog_gtk.cc

@@ -8,7 +8,9 @@
 
 #include <algorithm>
 #include <cmath>
+#include <memory>
 #include <string>
+#include <utility>
 #include <vector>
 
 #include "base/bind.h"
@@ -221,13 +223,13 @@ void PrintDialogGtk2::UseDefaultSettings() {
   InitPrintSettings(&settings);
 }
 
-bool PrintDialogGtk2::UpdateSettings(printing::PrintSettings* settings) {
+void PrintDialogGtk2::UpdateSettings(printing::PrintSettings* settings) {
   if (!gtk_settings_) {
     gtk_settings_ =
         gtk_print_settings_copy(g_last_used_settings.Get().settings());
   }
 
-  std::unique_ptr<GtkPrinterList> printer_list(new GtkPrinterList);
+  auto printer_list = std::make_unique<GtkPrinterList>();
   printer_ = printer_list->GetPrinterWithName(
       base::UTF16ToUTF8(settings->device_name()));
   if (printer_) {
@@ -269,6 +271,7 @@ bool PrintDialogGtk2::UpdateSettings(printing::PrintSettings* settings) {
     gtk_print_settings_set(gtk_settings_, kCUPSDuplex, cups_duplex_mode);
   }
 #endif
+
   if (!page_setup_)
     page_setup_ = gtk_page_setup_new();
 
@@ -317,7 +320,6 @@ bool PrintDialogGtk2::UpdateSettings(printing::PrintSettings* settings) {
                                            : GTK_PAGE_ORIENTATION_PORTRAIT);
 
   InitPrintSettings(settings);
-  return true;
 }
 
 void PrintDialogGtk2::ShowDialog(

chrome/browser/ui/libgtkui/print_dialog_gtk.h

@@ -39,7 +39,7 @@ class PrintDialogGtk2 : public printing::PrintDialogGtkInterface,
 
   // printing::PrintDialogGtkInterface implementation.
   void UseDefaultSettings() override;
-  bool UpdateSettings(printing::PrintSettings* settings) override;
+  void UpdateSettings(printing::PrintSettings* settings) override;
   void ShowDialog(
       gfx::NativeView parent_view,
       bool has_selection,

printing/print_dialog_gtk_interface.h

@@ -23,8 +23,8 @@ class PrintDialogGtkInterface {
   virtual void UseDefaultSettings() = 0;
 
   // Updates the dialog to use |settings|. Only used when printing without the
-  // system print dialog. E.g. for Print Preview. Returns false on error.
-  virtual bool UpdateSettings(PrintSettings* settings) = 0;
+  // system print dialog. E.g. for Print Preview.
+  virtual void UpdateSettings(PrintSettings* settings) = 0;
 
   // Shows the dialog and handles the response with |callback|. Only used when
   // printing with the native print dialog.

printing/printing_context_linux.cc

@@ -4,6 +4,9 @@
 
 #include "printing/printing_context_linux.h"
 
+#include <memory>
+#include <utility>
+
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/values.h"
@@ -12,29 +15,27 @@
 #include "printing/print_job_constants.h"
 #include "printing/units.h"
 
+namespace printing {
+
 namespace {
 
 // Function pointer for creating print dialogs. |callback| is only used when
 // |show_dialog| is true.
-printing::PrintDialogGtkInterface* (*create_dialog_func_)(
-    printing::PrintingContextLinux* context) = NULL;
+PrintDialogGtkInterface* (*create_dialog_func_)(PrintingContextLinux* context) =
+    nullptr;
 
 // Function pointer for determining paper size.
-gfx::Size (*get_pdf_paper_size_)(
-    printing::PrintingContextLinux* context) = NULL;
+gfx::Size (*get_pdf_paper_size_)(PrintingContextLinux* context) = nullptr;
 
 }  // namespace
 
-namespace printing {
-
 // static
 std::unique_ptr<PrintingContext> PrintingContext::Create(Delegate* delegate) {
   return base::WrapUnique(new PrintingContextLinux(delegate));
 }
 
 PrintingContextLinux::PrintingContextLinux(Delegate* delegate)
-    : PrintingContext(delegate), print_dialog_(NULL) {
-}
+    : PrintingContext(delegate), print_dialog_(nullptr) {}
 
 PrintingContextLinux::~PrintingContextLinux() {
   ReleaseContext();
@@ -121,9 +122,7 @@ PrintingContext::Result PrintingContextLinux::UpdatePrinterSettings(
     print_dialog_->AddRefToDialog();
   }
 
-  if (!print_dialog_->UpdateSettings(&settings_))
-    return OnError();
-
+  print_dialog_->UpdateSettings(&settings_);
   return OK;
 }
 
@@ -183,7 +182,7 @@ void PrintingContextLinux::ReleaseContext() {
 
 printing::NativeDrawingContext PrintingContextLinux::context() const {
   // Intentional No-op.
-  return NULL;
+  return nullptr;
 }
 
 }  // namespace printing