Fix case where accessible scrollToMakeVisible didn't work.

LayoutTests/accessibility/scroll-to-make-visible-nested-2.html

Index: LayoutTests/accessibility/scroll-to-make-visible-nested-2.html
diff --git a/LayoutTests/accessibility/scroll-to-make-visible-nested.html b/LayoutTests/accessibility/scroll-to-make-visible-nested-2.html
similarity index 54%
copy from LayoutTests/accessibility/scroll-to-make-visible-nested.html
copy to LayoutTests/accessibility/scroll-to-make-visible-nested-2.html
index 661bfccbca33c06c27e71a39aa59c2d3511dec7a..be9c96a593abfcb0a41b6ee978720ccb77987eab 100644
--- a/LayoutTests/accessibility/scroll-to-make-visible-nested.html
+++ b/LayoutTests/accessibility/scroll-to-make-visible-nested-2.html
@@ -6,24 +6,19 @@
 
 <p id="description"></p>
 
-<div style="border: 1px solid #000; height: 5000px;">5000-pixel box</div>
-
-<div id="outer_container" style="height: 100px; overflow: scroll">
-  <div style="border: 1px solid #000; height: 5000px;">5000-pixel box</div>
-  <div id="inner_container" style="height: 100px; overflow: scroll">
-    <div style="border: 1px solid #000; height: 5000px;">5000-pixel box</div>
-    <button id="target">Target</button>
-  </div>
+<div id="container" style="width: 100px; overflow: scroll">
+  <div style="border: 1px solid #000; width: 1000px; height: 5000px;">5000-pixel box</div>
+  <button id="target">Target</button>
+  <div style="border: 1px solid #000; width: 1000px; height: 5000px;">5000-pixel box</div>
 </div>
 
 <div id="console"></div>
 
 <script>
-description("Tests that scrolling to make an element visible successfully scrolls multiple nested scrolling views'.");
+description("Tests that scrolling to make an element visible works when the inner scroll container doesn't need to be scrolled, but the other one does.");
 
 function runTest() {
-    window.outerContainer = document.getElementById("outer_container");
-    window.innerContainer = document.getElementById("inner_container");
+    window.container = document.getElementById("container");
     window.target = document.getElementById("target");
 
     if (window.accessibilityController) {
@@ -33,12 +28,10 @@ function runTest() {
 
     // Reset the initial scroll positions (since calling focus() can scroll the page too).
     window.scrollTo(0, 0);
-    outerContainer.scrollTop = 0;
-    innerContainer.scrollTop = 0;
+    container.scrollTop = 0;
     shouldBe("window.pageYOffset", "0");
-    shouldBe("outerContainer.scrollTop", "0");
-    shouldBe("innerContainer.scrollTop", "0");
-    shouldBeGreaterThanOrEqual("target.getBoundingClientRect().top", "15000");
+    shouldBe("container.scrollTop", "0");
+    shouldBeGreaterThanOrEqual("target.getBoundingClientRect().top", "5000");
 
     // Scroll to make target visible.
     if (window.accessibilityController)