Printing: Read the color setting from the system dialog on Windows.

BUG=843212

Change-Id: Iab38833fabfe1c6729c76419d50e39cfe7eb098a
Reviewed-on: https://chromium-review.googlesource.com/1060384Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558875}

printing/print_settings_initializer_win.cc

@@ -6,6 +6,7 @@
 
 #include <windows.h>
 
+#include "printing/backend/win_helper.h"
 #include "printing/print_settings.h"
 
 namespace printing {
@@ -142,6 +143,8 @@ void PrintSettingsInitializerWin::InitPrintSettings(
                                           printable_area_device_units,
                                           false);
 
+  print_settings->set_color(IsDevModeWithColor(&dev_mode) ? COLOR : GRAY);
+
   // Check for postscript first so that we can change the mode with the
   // first command.
   int level;

printing/printing_context_win_unittest.cc

@@ -142,20 +142,35 @@ class MockPrintingContextWin : public PrintingContextSystemDialogWin {
 };
 
 TEST_F(PrintingContextTest, PrintAll) {
-  base::MessageLoop message_loop;
   if (IsTestCaseDisabled())
     return;
 
+  base::MessageLoop message_loop;
   MockPrintingContextWin context(this);
   context.AskUserForSettings(
       123, false, false,
       base::BindOnce(&PrintingContextTest::PrintSettingsCallback,
                      base::Unretained(this)));
   EXPECT_EQ(PrintingContext::OK, result());
-  PrintSettings settings = context.settings();
+  const PrintSettings& settings = context.settings();
   EXPECT_EQ(0u, settings.ranges().size());
 }
 
+TEST_F(PrintingContextTest, Color) {
+  if (IsTestCaseDisabled())
+    return;
+
+  base::MessageLoop message_loop;
+  MockPrintingContextWin context(this);
+  context.AskUserForSettings(
+      123, false, false,
+      base::BindOnce(&PrintingContextTest::PrintSettingsCallback,
+                     base::Unretained(this)));
+  EXPECT_EQ(PrintingContext::OK, result());
+  const PrintSettings& settings = context.settings();
+  EXPECT_NE(settings.color(), UNKNOWN_COLOR_MODEL);
+}
+
 TEST_F(PrintingContextTest, Base) {
   if (IsTestCaseDisabled())
     return;