Bounding boxes in the accessibility tree should always be relative to a box.

third_party/WebKit/LayoutTests/accessibility/bounds-calc.html

Index: third_party/WebKit/LayoutTests/accessibility/bounds-calc.html
diff --git a/third_party/WebKit/LayoutTests/accessibility/bounds-calc.html b/third_party/WebKit/LayoutTests/accessibility/bounds-calc.html
index 3f2a78134d2b0fdbf62597ceb369934779e77c91..cc24ac0ee2af3a14585ae1ed12f5570a3076ddaf 100644
--- a/third_party/WebKit/LayoutTests/accessibility/bounds-calc.html
+++ b/third_party/WebKit/LayoutTests/accessibility/bounds-calc.html
@@ -268,6 +268,17 @@ test(function(t) {
 }, "Test spans inside of absolute-positioned container");
 </script>
 
+<div class="container">
+  Before
+  <span id="span8" style="position:relative;">After</span>
+</div>
+
+<script>
+test(function(t) {
+    assertStaticTextChildDOMRectSameAsAXRect("span8", 0);
+}, "Test node that's inline and relative-positioned");
+</script>
+
 <script>
 if (window.testRunner)
     document.body.className = "hideAllContainers";