Fix broken MainThreadScrollingReason DCHECK.

cc/trees/layer_tree_host_impl.cc

Index: cc/trees/layer_tree_host_impl.cc
diff --git a/cc/trees/layer_tree_host_impl.cc b/cc/trees/layer_tree_host_impl.cc
index 52be560f7e03a89cccd7bc220b4ff97063d2984f..3ebc475fc4d7570641d205d1ec796bde35e32978 100644
--- a/cc/trees/layer_tree_host_impl.cc
+++ b/cc/trees/layer_tree_host_impl.cc
@@ -2500,10 +2500,10 @@ LayerImpl* LayerTreeHostImpl::FindScrollLayerForDeviceViewportPoint(
     if (status.thread == SCROLL_ON_MAIN_THREAD) {
       if (layer_impl->should_scroll_on_main_thread()) {
         DCHECK_LE(status.main_thread_scrolling_reasons,
-                  MainThreadScrollingReason::kMaxNonTransientScrollingReason);
+                  MainThreadScrollingReason::kMaxNonTransientScrollingReasons);
       } else {
         DCHECK_GT(status.main_thread_scrolling_reasons,
-                  MainThreadScrollingReason::kMaxNonTransientScrollingReason);
+                  MainThreadScrollingReason::kMaxNonTransientScrollingReasons);
       }
 
       *scroll_on_main_thread = true;
@@ -2522,10 +2522,10 @@ LayerImpl* LayerTreeHostImpl::FindScrollLayerForDeviceViewportPoint(
     if (status.thread == SCROLL_ON_MAIN_THREAD) {
       if (layer_impl->should_scroll_on_main_thread()) {
         DCHECK_LE(status.main_thread_scrolling_reasons,
-                  MainThreadScrollingReason::kMaxNonTransientScrollingReason);
+                  MainThreadScrollingReason::kMaxNonTransientScrollingReasons);
       } else {
         DCHECK_GT(status.main_thread_scrolling_reasons,
-                  MainThreadScrollingReason::kMaxNonTransientScrollingReason);
+                  MainThreadScrollingReason::kMaxNonTransientScrollingReasons);
       }
 
       *scroll_on_main_thread = true;