Make chromeos CUPS printing code namespaces consistent.

chrome/browser/chromeos/printing/specifics_translation_unittest.cc

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <string>
 #include <utility>
 
 #include "base/memory/ptr_util.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/printing/specifics_translation.h"
@@ skipping 12 matching lines @@
 constexpr char kUri[] = "ipps://notaprinter.chromium.org/ipp/print";
 constexpr char kUuid[] = "UUIDUUIDUUID";
 const base::Time kUpdateTime = base::Time::FromInternalValue(22114455660000);
 
 constexpr char kUserSuppliedPPD[] = "file://foo/bar/baz/eeaaaffccdd00";
 constexpr char kEffectiveMakeAndModel[] = "Manufacturer Model T1000";
 
 }  // namespace
 
 namespace chromeos {
-namespace printing {
 
 TEST(SpecificsTranslationTest, SpecificsToPrinter) {
   sync_pb::PrinterSpecifics specifics;
   specifics.set_id(kId);
   specifics.set_display_name(kDisplayName);
   specifics.set_description(kDescription);
   specifics.set_make_and_model(kMakeAndModel);
   specifics.set_uri(kUri);
   specifics.set_uuid(kUuid);
   specifics.set_updated_timestamp(kUpdateTime.ToJavaTime());
@@ skipping 172 matching lines @@
   original.set_id(kId);
   original.set_manufacturer(make);
   original.set_model(model);
   original.set_make_and_model(kMakeAndModel);
 
   auto printer = SpecificsToPrinter(original);
 
   EXPECT_EQ(kMakeAndModel, printer->make_and_model());
 }
 
-}  // namespace printing
 }  // namespace chromeos