[Home] Add lifecycle events and some tests

chrome/android/java/src/org/chromium/chrome/browser/widget/FadingBackgroundView.java

 // Copyright 2017 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.widget;
 
 import android.animation.Animator;
 import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.util.AttributeSet;
@@ skipping 132 matching lines @@
 
     @Override
     public void onClick(View view) {
         for (FadingViewObserver o : mObservers) o.onFadingViewClick();
     }
 
     @Override
     public void onTransitionPeekToHalf(float transitionFraction) {
         setViewAlpha(transitionFraction);
     }
+
+    @Override
+    public void onSheetOpened() {}
+
+    @Override
+    public void onSheetClosed() {}
+
+    @Override
+    public void onLoadUrl(String url) {}
 }