Address review comments

components/layout/layout_task.rs

@@ -70,6 +70,7 @@ use std::sync::{Arc, Mutex, MutexGuard};
 use std::thread;
 use style::computed_values::{filter, mix_blend_mode};
 use style::media_queries::{MediaType, MediaQueryList, Device};
+use style::properties::style_structs;
 use style::selector_matching::Stylist;
 use style::stylesheets::{Origin, Stylesheet, CSSRuleIteratorExt};
 use url::Url;
@@ -126,7 +127,7 @@ pub struct LayoutTaskData {
     /// A queued response for the content boxes of a node.
     pub content_boxes_response: Vec<Rect<Au>>,
 
-    /// A queued response for the client {top, left, width, height} of a node.
+    /// A queued response for the client {top, left, width, height} of a node in pixels.
     pub client_rect_response: Rect<i32>,
 
     /// The list of currently-running animations.
@@ -1436,11 +1437,13 @@ impl FragmentLocatingFragmentIterator {
 
 impl FragmentBorderBoxIterator for FragmentLocatingFragmentIterator {
     fn process(&mut self, fragment: &Fragment, border_box: &Rect<Au>) {
-        let border_style_struct = fragment.style.get_border();
-        let top_width = border_style_struct.border_top_width;
-        let right_width = border_style_struct.border_right_width;
-        let bottom_width = border_style_struct.border_bottom_width;
-        let left_width = border_style_struct.border_left_width;
+        let style_structs::Border {
+            border_top_width: top_width,
+            border_right_width: right_width,
+            border_bottom_width: bottom_width,
+            border_left_width: left_width,
+            ..
+        } = *fragment.style.get_border();
         self.client_rect.origin.y = top_width.to_px();
         self.client_rect.origin.x = left_width.to_px();
         self.client_rect.size.width = (border_box.size.width - left_width - right_width).to_px();

components/script/layout_interface.rs

@@ -95,7 +95,7 @@ pub trait LayoutRPC {
     fn content_box(&self) -> ContentBoxResponse;
     /// Requests the dimensions of all the content boxes, as in the `getClientRects()` call.
     fn content_boxes(&self) -> ContentBoxesResponse;
-    /// Requests the clientTop.
+    /// Requests the geometry of this node. Used by APIs such as `clientTop`.
     fn node_geometry(&self) -> NodeGeometryResponse;
     /// Requests the node containing the point of interest
     fn hit_test(&self, node: TrustedNodeAddress, point: Point2D<f32>) -> Result<HitTestResponse, ()>;

tests/wpt/mozilla/tests/mozilla/client-top-left-height-width.html

@@ -76,17 +76,13 @@
     <div id="with-border">my div</div>
     <div id="with-border-and-padding">my div</div>
     <div id="abs1">
-        <div id="abs2">
-            <div id="abs3">
-                <span id="span1">X</span>
-            </div>
-        </div>
+        <span id="span1">X</span>
     </div>
     <div id='rotated'>rotated</div>
     <div id='inline-block'>inline-block</div>
     <div id='display-none'>display-none</div>
     <script>
-    test_rect = function(name, left, top, height, width) {
+    function test_rect(name, left, top, height, width) {
       var div = document.getElementById(name);
       var rect = div.getBoundingClientRect();
 
@@ -96,18 +92,14 @@
       assert_equals(div.clientWidth, width);
     }
 
-    test(function() {
-        test_rect('no-border', 0, 0, 100, 100);
-        test_rect('with-border', 10, 10, 100, 100);
-        test_rect('with-border-and-padding', 10, 10, 120, 120);
-        test_rect('abs1', 0, 0, 120, 100);
-        test_rect('rotated', 0, 0, 100, 100);
-        test_rect('abs2', 0, 0, 80, 80);
-        test_rect('abs3', 0, 0, 40, 48);
-        test_rect('span1', 0, 0, 0, 0);
-        test_rect('inline-block', 0, 0, 100, 100);
-        test_rect('display-none', 0, 0, 0, 0);
-    });
+    test(function() { test_rect('no-border', 0, 0, 100, 100); }, 'Block without border');
+    test(function() { test_rect('with-border', 10, 10, 100, 100); }, 'Block with border');
+    test(function() { test_rect('with-border-and-padding', 10, 10, 120, 120); }, 'Block without border and padding');
+    test(function() { test_rect('abs1', 0, 0, 120, 100); }, 'Absolutely positioned block');
+    test(function() { test_rect('rotated', 0, 0, 100, 100); }, 'Rotated block');
+    test(function() { test_rect('span1', 0, 0, 0, 0); }, 'Span');
+    test(function() { test_rect('inline-block', 0, 0, 100, 100); }, 'Inline block');
+    test(function() { test_rect('display-none', 0, 0, 0, 0); }, 'display: none');
     </script>
 </body>
 </html>