Print Preview: Implement basic settings.

BUG=57902
TEST=Run with --enable-print-preview, make sure orientation and color settings work.
Review URL: http://codereview.chromium.org/6736014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@79655 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/printing/printing_context_cairo.cc b/printing/printing_context_cairo.cc
index 5687fff..c721e3d 100644
--- a/printing/printing_context_cairo.cc
+++ b/printing/printing_context_cairo.cc
@@ -6,8 +6,9 @@
 
 #include "base/logging.h"
 #include "base/values.h"
-#include "printing/units.h"
+#include "printing/print_job_constants.h"
 #include "printing/print_settings_initializer_gtk.h"
+#include "printing/units.h"
 
 #if defined(OS_CHROMEOS)
 #include <unicode/ulocdata.h>
@@ -152,6 +153,11 @@
     const DictionaryValue& job_settings, const PageRanges& ranges) {
   DCHECK(!in_print_job_);
 
+  bool landscape;
+  if (!job_settings.GetBoolean(kSettingLandscape, &landscape))
+    return OnError();
+  settings_.SetOrientation(landscape);
+
   settings_.ranges = ranges;
 
   // TODO(kmadhusu): Update other print settings such as number of copies,