Re-enable fractional scrolling test

As of crrev.com/c/1699381 tests now run with fractional scrolling
enabled so this test passes and can be re-enabled.

Bug: 920417
Change-Id: I39739e2f1e27f38ed10271b096841a778f3452c3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1756548
Commit-Queue: Mason Freed <masonfreed@chromium.org>
Auto-Submit: David Bokan <bokan@chromium.org>
Reviewed-by: Mason Freed <masonfreed@chromium.org>
Cr-Commit-Position: refs/heads/master@{#687396}

third_party/blink/renderer/core/page/scrolling/scrolling_coordinator_test.cc

@@ -177,11 +177,7 @@ TEST_P(ScrollingCoordinatorTest, fastScrollingByDefault) {
   ASSERT_FALSE(inner_viewport_scroll_layer->GetMainThreadScrollingReasons());
 }
 
-// TODO(920417): Re-enable this test when main thread scrolling supports
-// fractional scroll offsets.
-TEST_P(ScrollingCoordinatorTest, DISABLED_fastFractionalScrollingDiv) {
-  ScopedFractionalScrollOffsetsForTest fractional_scroll_offsets(true);
-
+TEST_P(ScrollingCoordinatorTest, fastFractionalScrollingDiv) {
   RegisterMockedHttpURLLoad("fractional-scroll-div.html");
   NavigateTo(base_url_ + "fractional-scroll-div.html");
   ForceFullCompositingUpdate();