Rename cc::ScrollNode's inner and outer viewport members

cc/trees/scroll_node.cc

Index: cc/trees/scroll_node.cc
diff --git a/cc/trees/scroll_node.cc b/cc/trees/scroll_node.cc
index 18b5d42d974b2515f92aa940c69d882f784fe73c..ef3498a6712f7a44009d3ef2449d3527d1a3a7e0 100644
--- a/cc/trees/scroll_node.cc
+++ b/cc/trees/scroll_node.cc
@@ -21,8 +21,8 @@ ScrollNode::ScrollNode()
           MainThreadScrollingReason::kNotScrollingOnMain),
       contains_non_fast_scrollable_region(false),
       max_scroll_offset_affected_by_page_scale(false),
-      is_inner_viewport_scroll_layer(false),
-      is_outer_viewport_scroll_layer(false),
+      scrolls_inner_viewport(false),
+      scrolls_outer_viewport(false),
       should_flatten(false),
       user_scrollable_horizontal(false),
       user_scrollable_vertical(false),
@@ -41,10 +41,8 @@ bool ScrollNode::operator==(const ScrollNode& other) const {
          bounds == other.bounds &&
          max_scroll_offset_affected_by_page_scale ==
              other.max_scroll_offset_affected_by_page_scale &&
-         is_inner_viewport_scroll_layer ==
-             other.is_inner_viewport_scroll_layer &&
-         is_outer_viewport_scroll_layer ==
-             other.is_outer_viewport_scroll_layer &&
+         scrolls_inner_viewport == other.scrolls_inner_viewport &&
+         scrolls_outer_viewport == other.scrolls_outer_viewport &&
          offset_to_transform_parent == other.offset_to_transform_parent &&
          should_flatten == other.should_flatten &&
          user_scrollable_horizontal == other.user_scrollable_horizontal &&