Replace remaining ASSERT with DCHECK/_EQ as appropriate

third_party/WebKit/Source/core/page/SpatialNavigation.cpp

Index: third_party/WebKit/Source/core/page/SpatialNavigation.cpp
diff --git a/third_party/WebKit/Source/core/page/SpatialNavigation.cpp b/third_party/WebKit/Source/core/page/SpatialNavigation.cpp
index bba96114c553f431aa252da6d0a71eba828d7454..5b43a748710d022f5e4e1319b857eeb18922b6cf 100644
--- a/third_party/WebKit/Source/core/page/SpatialNavigation.cpp
+++ b/third_party/WebKit/Source/core/page/SpatialNavigation.cpp
@@ -249,7 +249,7 @@ bool ScrollInDirection(Node* container, WebFocusType type) {
         dx = -pixels_per_line_step;
         break;
       case kWebFocusTypeRight:
-        ASSERT(container->GetLayoutBox()->ScrollWidth() >
+        DCHECK(container->GetLayoutBox()->ScrollWidth() >
                (container->GetLayoutBox()->ScrollLeft() +
                 container->GetLayoutBox()->ClientWidth()));
         dx = pixels_per_line_step;
@@ -258,7 +258,7 @@ bool ScrollInDirection(Node* container, WebFocusType type) {
         dy = -pixels_per_line_step;
         break;
       case kWebFocusTypeDown:
-        ASSERT(container->GetLayoutBox()->ScrollHeight() -
+        DCHECK(container->GetLayoutBox()->ScrollHeight() -
                (container->GetLayoutBox()->ScrollTop() +
                 container->GetLayoutBox()->ClientHeight()));
         dy = pixels_per_line_step;
@@ -408,7 +408,7 @@ static LayoutRect RectToAbsoluteCoordinates(LocalFrame* initial_frame,
 }
 
 LayoutRect NodeRectInAbsoluteCoordinates(Node* node, bool ignore_border) {
-  ASSERT(node && node->GetLayoutObject() &&
+  DCHECK(node && node->GetLayoutObject() &&
          !node->GetDocument().View()->NeedsLayout());
 
   if (node->IsDocumentNode())
@@ -624,7 +624,7 @@ void DistanceDataForNode(WebFocusType type,
 }
 
 bool CanBeScrolledIntoView(WebFocusType type, const FocusCandidate& candidate) {
-  ASSERT(candidate.visible_node && candidate.is_offscreen);
+  DCHECK(candidate.visible_node && candidate.is_offscreen);
   LayoutRect candidate_rect = candidate.rect;
   for (Node& parent_node :
        NodeTraversal::AncestorsOf(*candidate.visible_node)) {