Change cc::ElementId to be a uint64_t

third_party/WebKit/Source/web/tests/VisualViewportTest.cpp

Index: third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp b/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
index 6ffa89edb756feab93eca4df5675866c6babe54d..6f660edf70836e9e1a8d5eb16bff745cda6f0483 100644
--- a/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
+++ b/third_party/WebKit/Source/web/tests/VisualViewportTest.cpp
@@ -790,7 +790,7 @@ TEST_P(VisualViewportTest, TestAttachingNewFrameSetsInnerScrollLayerSize) {
   EXPECT_SIZE_EQ(FloatSize(320, 240), visualViewport.ScrollLayer()->Size());
 
   EXPECT_EQ(static_cast<int>(CompositorSubElementId::kViewport),
-            visualViewport.ScrollLayer()->GetElementId().secondaryId);
+            visualViewport.ScrollLayer()->GetElementId() % 4);

[suzyh_UTC10 (ex-contributor), 2017/05/05 04:27:31]

Please explain this piece of magic with variable/method names, or at least a
comment.

[chrishtr, 2017/05/05 05:34:52]

Done.

 
   // Ensure the location and scale were reset.
   EXPECT_SIZE_EQ(FloatSize(), visualViewport.GetScrollOffset());