mash: Fix ShelfItem mojo struct; add enums and traits.

ash/public/cpp/shelf_struct_traits_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 "ash/public/cpp/shelf_struct_traits.h"
+
+#include "ash/public/cpp/shelf_item.h"
+#include "ash/public/interfaces/shelf.mojom.h"
+#include "base/strings/utf_string_conversions.h"
+#include "mojo/common/common_custom_types_struct_traits.h"
+#include "skia/public/interfaces/bitmap_skbitmap_struct_traits.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "ui/gfx/image/image_unittest_util.h"
+
+namespace ash {
+namespace {
+
+TEST(ShelfItemStructTraitsTest, Basic) {
+  ShelfItem item;
+  item.type = TYPE_APP;
+  item.image = gfx::test::CreateImageSkia(32, 16);
+  item.id = 123u;
+  item.status = STATUS_RUNNING;
+  item.app_id = "foo";
+  item.title = base::ASCIIToUTF16("bar");
+  item.shows_tooltip = false;
+  item.pinned_by_policy = true;
+
+  ShelfItem out_item;
+  ASSERT_TRUE(mojom::ShelfItem::Deserialize(mojom::ShelfItem::Serialize(&item),
+                                            &out_item));
+
+  EXPECT_EQ(TYPE_APP, out_item.type);
+  EXPECT_FALSE(out_item.image.isNull());
+  EXPECT_EQ(gfx::Size(32, 16), out_item.image.size());
+  EXPECT_EQ(123u, out_item.id);
+  EXPECT_EQ(STATUS_RUNNING, out_item.status);
+  EXPECT_EQ("foo", out_item.app_id);
+  EXPECT_EQ(base::ASCIIToUTF16("bar"), out_item.title);
+  EXPECT_FALSE(out_item.shows_tooltip);
+  EXPECT_TRUE(out_item.pinned_by_policy);
+}
+
+}  // namespace
+}  // namespace ash