Implement MediaValues for initial viewport.

third_party/WebKit/Source/core/css/MediaValuesInitialViewportTest.cpp

+// Copyright 2016 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 "core/css/MediaValuesInitialViewport.h"
+
+#include "core/frame/FrameView.h"
+#include "core/testing/DummyPageHolder.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class MediaValuesInitialViewportTest : public ::testing::Test {
+ protected:
+  Document& document() const { return m_dummyPageHolder->document(); }
+
+ private:
+  void SetUp() override {
+    m_dummyPageHolder = DummyPageHolder::create(IntSize(320, 480));
+  }
+
+  std::unique_ptr<DummyPageHolder> m_dummyPageHolder;
+};
+
+TEST_F(MediaValuesInitialViewportTest, InitialViewportSize) {
+  FrameView* view = document().view();
+  ASSERT_TRUE(view);
+  EXPECT_TRUE(view->layoutSizeFixedToFrameSize());
+
+  MediaValues* mediaValues =
+      MediaValuesInitialViewport::create(*document().frame());
+  EXPECT_EQ(320, mediaValues->viewportWidth());
+  EXPECT_EQ(480, mediaValues->viewportHeight());
+
+  view->setLayoutSizeFixedToFrameSize(false);
+  view->setLayoutSize(IntSize(800, 600));
+  EXPECT_EQ(320, mediaValues->viewportWidth());
+  EXPECT_EQ(480, mediaValues->viewportHeight());
+}
+
+}  // namespace blink