Fix scroll origin, overflow rects, and coordinate flipping for flexbox.

third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html

Index: third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html
diff --git a/third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html b/third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html
index 66343a39bc782bc65523e4e9d3f4d8f28a4b4603..6c6095b1ced2935f6e8d4742887a42213940e4e3 100644
--- a/third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html
+++ b/third_party/WebKit/LayoutTests/css3/flexbox/flexbox-overflow-auto-expected.html
@@ -34,11 +34,9 @@
     <p>Scrollbars should work in all the flexboxes.</p>
 </body>
 <script>
-// The -almost values are cases where we don't scroll all the way because of
-// https://bugs.webkit.org/show_bug.cgi?id=76129 .
 var results = [
     'left top', 'left top', 'right top', 'left bottom',
-    'right-almost top', 'right-almost top', 'right-almost bottom', 'left top',
+    'right top', 'right top', 'right bottom', 'left top',
     'left top', 'left top', 'left bottom', 'right top'];
 
 var testContents = '';
@@ -67,14 +65,6 @@ Array.prototype.forEach.call(document.querySelectorAll(".bottom"), function(elem
     element.firstChild.scrollTop = 1000;
 });
 
-Array.prototype.forEach.call(document.querySelectorAll(".right-almost"), function(element) {

[leviw_travelin_and_unemployed, 2016/05/10 17:52:42]

Squeeee!

-    element.firstChild.scrollLeft = element.firstChild.scrollWidth - element.firstChild.offsetWidth;
-});
-
-Array.prototype.forEach.call(document.querySelectorAll(".bottom-almost"), function(element) {
-    element.firstChild.scrollTop = element.firstChild.scrollHeight - element.firstChild.offsetHeight;
-});
-
 </script>
 </body>
 </html>