The method WebappRegistry#isWebApkInstalled now reuses InstallerDelegate#isInstalled so as not to r…

chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java
index 71086e8db23c387e45b02c052dc02970366ff1bb..498cceb34a82484bae1bf93faeabe76d0a8ad731 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/banners/InstallerDelegate.java
@@ -4,17 +4,13 @@
 
 package org.chromium.chrome.browser.banners;
 
-import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.SystemClock;
-import android.text.TextUtils;
 
 import org.chromium.base.VisibleForTesting;
 
-import java.util.List;
-
 /**
  * Monitors the PackageManager to see when an app has been installed.
  */
@@ -107,11 +103,12 @@ public class InstallerDelegate implements Runnable {
      * @return True if the PackageManager reports that the app is installed, false otherwise.
      */
     public static boolean isInstalled(PackageManager packageManager, String packageName) {
-        List<PackageInfo> packs = packageManager.getInstalledPackages(0);
-        for (int i = 0; i < packs.size(); i++) {
-            if (TextUtils.equals(packs.get(i).packageName, packageName)) return true;
+        try {
+            packageManager.getPackageInfo(packageName, 0);
+        } catch (PackageManager.NameNotFoundException e) {
+            return false;
         }
-        return false;
+        return true;
     }
 
     /**