Change cc::ElementId to be a uint64_t

third_party/WebKit/Source/platform/graphics/CompositorElementIdTest.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 "platform/graphics/CompositorElementId.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace blink {
+
+class CompositorElementIdTest : public ::testing::Test {};
+
+TEST_F(CompositorElementIdTest, EncodeDecode) {
+  CompositorElementId element_id =
+      CreateCompositorElementId(1, CompositorSubElementId::kPrimary);
+  EXPECT_EQ(1u, DomNodeIdFromCompositorElementId(element_id));
+  EXPECT_EQ(CompositorSubElementId::kPrimary,
+            SubElementIdFromCompositorElementId(element_id));
+
+  element_id =
+      CreateCompositorElementId(1, CompositorSubElementId::kLinkHighlight);
+  EXPECT_EQ(1u, DomNodeIdFromCompositorElementId(element_id));
+  EXPECT_EQ(CompositorSubElementId::kLinkHighlight,
+            SubElementIdFromCompositorElementId(element_id));
+
+  element_id = CreateCompositorElementId(23, CompositorSubElementId::kScroll);
+  EXPECT_EQ(23u, DomNodeIdFromCompositorElementId(element_id));
+  EXPECT_EQ(CompositorSubElementId::kScroll,
+            SubElementIdFromCompositorElementId(element_id));
+}
+
+}  // namespace blink