Connect LTHI::ScrollAnimated to cc::Viewport

cc/layers/viewport_unittest.cc

Index: cc/layers/viewport_unittest.cc
diff --git a/cc/layers/viewport_unittest.cc b/cc/layers/viewport_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..c0cbf6c2269590501946bc9893ffcf5a47a78a7c
--- /dev/null
+++ b/cc/layers/viewport_unittest.cc
@@ -0,0 +1,30 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.

[bokan, 2016/04/06 13:35:52]

Nit: "because it's 2016"

[ymalik, 2016/04/06 15:33:45]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "cc/layers/viewport.h"
+
+#include <stddef.h>
+
+#include "cc/test/layer_test_common.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace cc {
+
+TEST(ViewportTest, ShouldAnimateViewport) {
+  EXPECT_TRUE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(10, 1),
+                                              gfx::Vector2dF(8, 5)));
+  EXPECT_TRUE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(0, 10),
+                                              gfx::Vector2dF(4, 8)));
+  EXPECT_TRUE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(10, 10),
+                                              gfx::Vector2dF(8, 9)));
+
+  EXPECT_FALSE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(8, 10),
+                                               gfx::Vector2dF(8, 10)));
+  EXPECT_FALSE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(8, 10),
+                                               gfx::Vector2dF(10, 0)));
+  EXPECT_FALSE(Viewport::ShouldAnimateViewport(gfx::Vector2dF(10, 10),
+                                               gfx::Vector2dF(10, 18)));
+}
+
+}  // namespace cc