[fuchsia] Enable AccessibilityBridgeTest.PerformScrollToMakeVisible

This test was disabled due to a change in the accessibility internals.
The change necessary to get this test to work was included in CL
https://crrev.com/c/2314758.

Bug: 1122806
Change-Id: I71045e0e432d07b259fc56ed31abedc2316a0b2d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2544746Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Commit-Queue: Sharon Yang <yangsharon@chromium.org>
Cr-Commit-Position: refs/heads/master@{#828509}

fuchsia/engine/browser/accessibility_bridge_browsertest.cc

@@ -325,8 +325,7 @@ IN_PROC_BROWSER_TEST_F(AccessibilityBridgeTest, Disconnect) {
 
 // TODO(crbug.com/1122806): Migrate this test to use kSignalEndOfTest and
 // re-enable it.
-IN_PROC_BROWSER_TEST_F(AccessibilityBridgeTest,
-                       DISABLED_PerformScrollToMakeVisible) {
+IN_PROC_BROWSER_TEST_F(AccessibilityBridgeTest, PerformScrollToMakeVisible) {
   constexpr int kScreenWidth = 720;
   constexpr int kScreenHeight = 640;
   gfx::Rect screen_bounds(kScreenWidth, kScreenHeight);