Make UiUtils.computeMaxWidthOfListAdapterItems() use AbsListView.LayoutParams

Currently, this method uses LinearLayout.LayoutParams to measure the views in
the ListView (this code was refactored out of DropdownPopupWindow). However,
this causes a crash in certain situations on Android J and K (for example,
adding a LinearLayout as a footer view, calling this method, and then later
trying to measure a parent of the ListView) because LinearLayout.LayoutParams
can't be cast to AbsListView.LayoutParams.

This CL changes this code to use AbsListView.LayoutParams to avoid this crash.

Bug: 
Change-Id: I90b68cd812155ac87bc089f95493cdd82de77395
Reviewed-on: https://chromium-review.googlesource.com/571600Reviewed-by: Theresa <twellington@chromium.org>
Commit-Queue: Ryan Landay <rlanday@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486824}

ui/android/java/src/org/chromium/ui/UiUtils.java

@@ -22,7 +22,7 @@ import android.view.ViewGroup;
 import android.view.inputmethod.InputMethodInfo;
 import android.view.inputmethod.InputMethodManager;
 import android.view.inputmethod.InputMethodSubtype;
-import android.widget.LinearLayout;
+import android.widget.AbsListView;
 import android.widget.ListAdapter;
 
 import org.chromium.base.ApiCompatibilityUtils;
@@ -429,8 +429,8 @@ public class UiUtils {
     public static int computeMaxWidthOfListAdapterItems(ListAdapter adapter) {
         final int widthMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
         final int heightMeasureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED);
-        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
-                LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
+        AbsListView.LayoutParams params = new AbsListView.LayoutParams(
+                AbsListView.LayoutParams.WRAP_CONTENT, AbsListView.LayoutParams.WRAP_CONTENT);
 
         int maxWidth = 0;
         View[] itemViews = new View[adapter.getViewTypeCount()];