Remove non-test use of BottomSheetController#endAnimationsForTesting

Bug: 100227
Change-Id: I8fd81f1d1584ba49fad35d9d30caec07d92dd8b3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2210797
Commit-Queue: Matthew Jones <mdjones@chromium.org>
Reviewed-by: Donn Denman <donnd@chromium.org>
Cr-Commit-Position: refs/heads/master@{#770829}

chrome/android/java/src/org/chromium/chrome/browser/compositor/bottombar/ephemeraltab/EphemeralTabCoordinator.java

@@ -6,7 +6,6 @@ package org.chromium.chrome.browser.compositor.bottombar.ephemeraltab;
 
 import android.content.Context;
 import android.graphics.drawable.Drawable;
-import android.support.annotation.VisibleForTesting;
 import android.view.View;
 
 import org.chromium.base.Callback;
@@ -244,11 +243,6 @@ public class EphemeralTabCoordinator implements View.OnLayoutChangeListener {
         mBottomSheetController.get().hideContent(mSheetContent, /* animate= */ true);
     }
 
-    @VisibleForTesting
-    public void endAnimationsForTesting() {
-        mBottomSheetController.get().endAnimationsForTesting();
-    }
-
     @Override
     public void onLayoutChange(View view, int left, int top, int right, int bottom, int oldLeft,
             int oldTop, int oldRight, int oldBottom) {

chrome/android/javatests/src/org/chromium/chrome/browser/previewtab/PreviewTabTest.java

@@ -65,8 +65,11 @@ public class PreviewTabTest {
     }
 
     private void endAnimations() {
-        TestThreadUtils.runOnUiThreadBlocking(
-                () -> mEphemeralTabCoordinator.endAnimationsForTesting());
+        TestThreadUtils.runOnUiThreadBlocking(()
+                                                      -> mActivityTestRule.getActivity()
+                                                                 .getRootUiCoordinatorForTesting()
+                                                                 .getBottomSheetController()
+                                                                 .endAnimationsForTesting());
     }
 
     /**