Don't animate sheet when clearing requests and closing

This patch disables animations when the bottom sheet is clearing its
requests and hiding. This prevents an issue in EoC where new content
is requested prior to the sheet being completely hidden. This results
in suggestions being visible without reverse scrolling.

Bug: 834923
Change-Id: I8bed11c87e24ab3b16d95d91329723eeb2a188e5
Reviewed-on: https://chromium-review.googlesource.com/1048705Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#557520}

chrome/android/java/src/org/chromium/chrome/browser/widget/bottomsheet/BottomSheetController.java

@@ -395,7 +395,7 @@ public class BottomSheetController implements ApplicationStatus.ActivityStateLis
         // TODO(mdjones): Replace usages of bottom sheet with a model in line with MVC.
         // TODO(mdjones): It would probably be useful to expose an observer method that notifies
         //                objects when all content requests are cleared.
-        hideContent(mBottomSheet.getCurrentSheetContent(), true);
+        hideContent(mBottomSheet.getCurrentSheetContent(), false);
         mWasShownForCurrentTab = false;
         mIsSuppressed = false;
     }