leanback: fix new flaky tests

Fails due to the size of view vs window

Bug: none
Test: testMoveItemToTheRight testPredictiveLayoutRemove2

Change-Id: I2675c87780a7931357d8539b7bc60bf7c4b78db1
diff --git a/v17/leanback/tests/java/android/support/v17/leanback/widget/GridWidgetTest.java b/v17/leanback/tests/java/android/support/v17/leanback/widget/GridWidgetTest.java
index bea403c..a4dc9a3 100644
--- a/v17/leanback/tests/java/android/support/v17/leanback/widget/GridWidgetTest.java
+++ b/v17/leanback/tests/java/android/support/v17/leanback/widget/GridWidgetTest.java
@@ -851,7 +851,7 @@
         mActivityTestRule.runOnUiThread(new Runnable() {
             @Override
             public void run() {
-                mActivity.removeItems(46, 3);
+                mActivity.removeItems(47, 3);
             }
         });
         waitForItemAnimationStart();
@@ -1028,7 +1028,7 @@
             public void run() {
                 for (int i = 0; i < mGridView.getLayoutManager().getChildCount(); i++) {
                     View v = mGridView.getLayoutManager().getChildAt(i);
-                    if (Math.abs(v.getTranslationX()) > 5) {
+                    if (mGridView.getChildAdapterPosition(v) >= 51) {
                         moveInViewHolders.add(v);
                     }
                 }
@@ -1091,7 +1091,7 @@
             public void run() {
                 for (int i = 0; i < mGridView.getLayoutManager().getChildCount(); i++) {
                     View v = mGridView.getLayoutManager().getChildAt(i);
-                    if (Math.abs(v.getTranslationX()) > 5) {
+                    if (mGridView.getChildAdapterPosition(v) <= 1499) {
                         moveInViewHolders.add(v);
                     }
                 }