Allow the app banner installability check to run on page load.

chrome/android/javatests/src/org/chromium/chrome/browser/banners/AppBannerManagerTest.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.banners;
 
 import android.app.Activity;
 import android.app.Instrumentation.ActivityMonitor;
 import android.app.Instrumentation.ActivityResult;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.graphics.Bitmap;
 import android.support.test.filters.MediumTest;
 import android.support.test.filters.SmallTest;
 import android.test.mock.MockPackageManager;
 import android.text.TextUtils;
 import android.view.View;
 import android.widget.Button;
 import android.widget.TextView;
 
 import org.chromium.base.ThreadUtils;
+import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.test.util.Feature;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.ShortcutHelper;
 import org.chromium.chrome.browser.engagement.SiteEngagementService;
 import org.chromium.chrome.browser.infobar.AppBannerInfoBarAndroid;
 import org.chromium.chrome.browser.infobar.AppBannerInfoBarDelegateAndroid;
 import org.chromium.chrome.browser.infobar.InfoBar;
 import org.chromium.chrome.browser.infobar.InfoBarContainer;
 import org.chromium.chrome.browser.infobar.InfoBarContainer.InfoBarAnimationListener;
 import org.chromium.chrome.browser.profiles.Profile;
@@ skipping 495 matching lines @@
                     return mDetailsDelegate.mNumRetrieved;
                 }
             }));
         }
     }
 
     @SmallTest
     @Feature({"AppBanners"})
     public void testWebAppBannerAppears() throws Exception {
         triggerWebAppBanner(mWebAppUrl, WEB_APP_TITLE, false);
+
+        // Verify metrics calling in the successful case.
+        ThreadUtils.runOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+                AppBannerManager manager = getActivity().getActivityTab().getAppBannerManager();
+                manager.recordMenuItemAddToHomescreen();
+                assertEquals(1,
+                        RecordHistogram.getHistogramValueCountForTesting(
+                                "Webapp.InstallabilityCheckStatus.MenuItemAddToHomescreen", 5));
+
+                manager.recordMenuOpen();
+                assertEquals(1,
+                        RecordHistogram.getHistogramValueCountForTesting(
+                                "Webapp.InstallabilityCheckStatus.MenuOpen", 5));
+            }
+        });
     }
 
     @SmallTest
     @Feature({"AppBanners"})
     public void testWebAppBannerDoesNotAppearAfterInstall() throws Exception {
         triggerWebAppBanner(mWebAppUrl, WEB_APP_TITLE, true);
 
         // The banner should not reshow after the site has been installed.
         AppBannerManager.setTimeDeltaForTesting(100);
         new TabLoadObserver(getActivity().getActivityTab())
@@ skipping 77 matching lines @@
         });
 
         // Test that bitmap sizes match expectations.
         int idealSize = getActivity().getResources().getDimensionPixelSize(
                 R.dimen.webapp_splash_image_size_ideal);
         Bitmap splashImage = ShortcutHelper.decodeBitmapFromString(dataStorageFactory.mSplashImage);
         assertEquals(idealSize, splashImage.getWidth());
         assertEquals(idealSize, splashImage.getHeight());
     }
 }