Compute the correct overflow-x and overflow-y values for table elements

LayoutTests/fast/table/overflowScroll.html

Index: LayoutTests/fast/table/overflowScroll.html
diff --git a/LayoutTests/fast/table/overflowScroll.html b/LayoutTests/fast/table/overflowScroll.html
new file mode 100644
index 0000000000000000000000000000000000000000..e4956bc3e8656526c89bc2ef5090cec932cb0bba
--- /dev/null
+++ b/LayoutTests/fast/table/overflowScroll.html
@@ -0,0 +1,29 @@
+<style>

[Julien - ping for review, 2015/07/16 14:58:12]

Cough, cough, <!DOCTYPE>, cough, cough (not repeated to other files missing it
for more cheesiness).

+.scrollingElement
+{
+    width: 100px;
+    height: 100px;
+    background-color: green;
+    overflow: scroll;
+}
+table
+{
+    margin-bottom: 35px;
+}
+</style>
+<table class="scrollingElement" cellspacing=0>
+    <tbody>
+    <tr><td> text text text text</td></tr>

[Julien - ping for review, 2015/07/16 14:58:12]

Is the content needed here and the following tables in this file? If not, it
distracts the reader from what you're actually testing IMHO.

+    </tbody>
+</table>
+<table cellspacing=0>
+    <tbody class="scrollingElement">
+    <tr><td> text text text text</td></tr>
+    </tbody>
+</table>
+<table cellspacing=0>
+    <tbody>
+    <tr class="scrollingElement"><td>text text text text</td></tr>
+    </tbody>
+</table>
+<p> crbug.com/368699: Tables, table rows and table sections don't have scrollbars when they have overflow:scroll. </p>