[Autofill Assistant] Fixed recently introduced crash upon showing details.

This relates to http://crrev/c/1340940 , where the class of the bottombar layout was changed in autofill_assistant_sheet.xml, but not in the corresponding cast in BottomBarAnimations.java:setBottomBarHeight().

Bug: 806868
Change-Id: Id2bd5bf41862afe7e8425188a2fc048c478726c8
Reviewed-on: https://chromium-review.googlesource.com/c/1356981Reviewed-by: Mathias Carlen <mcarlen@chromium.org>
Commit-Queue: Clemens Arbesser <arbesser@google.com>
Cr-Commit-Position: refs/heads/master@{#612702}

chrome/android/java/src/org/chromium/chrome/browser/autofill_assistant/ui/BottomBarAnimations.java

@@ -7,11 +7,11 @@ package org.chromium.chrome.browser.autofill_assistant.ui;
 import android.animation.Animator;
 import android.animation.AnimatorListenerAdapter;
 import android.animation.ValueAnimator;
+import android.support.design.widget.CoordinatorLayout;
 import android.util.DisplayMetrics;
 import android.util.TypedValue;
 import android.view.View;
 import android.view.ViewGroup;
-import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 
 import org.chromium.base.Callback;
@@ -159,8 +159,8 @@ public class BottomBarAnimations {
     }
 
     private void setBottomBarHeight(int targetHeight) {
-        FrameLayout.LayoutParams layoutParams =
-                (FrameLayout.LayoutParams) mBottomBarView.getLayoutParams();
+        CoordinatorLayout.LayoutParams layoutParams =
+                (CoordinatorLayout.LayoutParams) mBottomBarView.getLayoutParams();
         layoutParams.height = targetHeight;
         mBottomBarView.setLayoutParams(layoutParams);
     }