📰 Add tests for context menu usage

chrome/android/java/src/org/chromium/chrome/browser/suggestions/TileGridLayout.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.suggestions;
 
 import android.content.Context;
 import android.content.res.Resources;
 import android.text.TextUtils;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.FrameLayout;
 
 import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.util.MathUtils;
 
 /**
  * A layout that arranges tiles in a grid.
  */
 public class TileGridLayout extends FrameLayout {
     private final int mVerticalSpacing;
     private final int mMinHorizontalSpacing;
     private final int mMaxHorizontalSpacing;
@@ skipping 129 matching lines @@
             getChildAt(i).setVisibility(View.GONE);
         }
 
         int totalHeight = paddingTop + getPaddingBottom() + numRows * childHeight
                 + (numRows - 1) * mVerticalSpacing + mExtraVerticalSpacing;
 
         setMeasuredDimension(totalWidth, resolveSize(totalHeight, heightMeasureSpec));
     }
 
     /** @return A tile view associated to the provided URL, or {@code null} if none is found. */
-    private TileView getTileView(String url) {
+    @VisibleForTesting
+    TileView getTileView(String url) {
         int childCount = getChildCount();
         for (int i = 0; i < childCount; i++) {
             TileView tileView = (TileView) getChildAt(i);
             if (TextUtils.equals(url, tileView.getUrl())) return tileView;
         }
         return null;
     }
 }