Remove LatencyInfo::sequence_number. (May break metrics).

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index 176e8b340e6b8123caffcd216fe5ed885cc7aa22..4298dad5177334584dc8f5d322d8ee31b1ab32e0 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -2106,8 +2106,7 @@ TEST_F(LayerTreeHostImplTest, ImplPinchZoomWheelBubbleBetweenViewports) {
 
 TEST_F(LayerTreeHostImplTest, ScrollWithSwapPromises) {
   ui::LatencyInfo latency_info;
-  latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 0,
-                                1234);
+  latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 0);
   std::unique_ptr<SwapPromise> swap_promise(
       new LatencyInfoSwapPromise(latency_info));
 
@@ -9248,8 +9247,7 @@ TEST_F(LayerTreeHostImplTest, LatencyInfoPassedToCompositorFrameMetadata) {
           host_impl_->compositor_frame_sink());
 
   ui::LatencyInfo latency_info;
-  latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 0,
-                                0);
+  latency_info.AddLatencyNumber(ui::INPUT_EVENT_LATENCY_BEGIN_RWH_COMPONENT, 0);
   std::unique_ptr<SwapPromise> swap_promise(
       new LatencyInfoSwapPromise(latency_info));
   host_impl_->active_tree()->QueuePinnedSwapPromise(std::move(swap_promise));