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

content/browser/accessibility/dump_accessibility_tree_browsertest.cc

Index: content/browser/accessibility/dump_accessibility_tree_browsertest.cc
diff --git a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
index 298b011d81572684c6e4a0f149062b44b0c1debe..aab807f15e93fc9affea1fddd9d1ee7ef3408add 100644
--- a/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
+++ b/content/browser/accessibility/dump_accessibility_tree_browsertest.cc
@@ -248,6 +248,11 @@ IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityCSSFontFamily) {
   RunCSSTest(FILE_PATH_LITERAL("font-family.html"));
 }
 
+IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest,
+                       AccessibilityCSSInlinePositionRelative) {
+  RunCSSTest(FILE_PATH_LITERAL("inline-position-relative.html"));
+}
+
 IN_PROC_BROWSER_TEST_F(DumpAccessibilityTreeTest, AccessibilityCSSLanguage) {
   RunCSSTest(FILE_PATH_LITERAL("language.html"));
 }