Add a chrome://webapks page.

chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java

Index: chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java
diff --git a/chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java b/chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java
index 377494bdae5659ecf521421ede980fe4317abced..b1dd13fcf9e4b7151773cd5e2f3a2b41cc5ad3b2 100644
--- a/chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java
+++ b/chrome/android/webapk/libs/client/src/org/chromium/webapk/lib/client/WebApkValidator.java
@@ -4,8 +4,6 @@
 
 package org.chromium.webapk.lib.client;
 
-import static org.chromium.webapk.lib.common.WebApkConstants.WEBAPK_PACKAGE_PREFIX;
-
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageInfo;
@@ -15,6 +13,8 @@ import android.content.pm.ResolveInfo;
 import android.content.pm.Signature;
 import android.util.Log;
 
+import org.chromium.webapk.lib.common.WebApkConstants;

[Xi Han, 2017/01/16 16:56:19]

Is this change necessary?

[gonzalon, 2017/01/16 19:50:44]

I could finally figure out what was happening. The auto importer puts the static
import after all of the other imports, but when that happens I can't push the
code, because I get an error. I manually put the static import on top and now it
works, it was just a matter of setting up android studio to change the import
order to fit Google's guidelines.

+
 import java.util.Arrays;
 import java.util.List;
 
@@ -69,7 +69,8 @@ public class WebApkValidator {
     public static String findWebApkPackage(Context context, List<ResolveInfo> infos) {
         for (ResolveInfo info : infos) {
             if (info.activityInfo != null
-                    && info.activityInfo.packageName.startsWith(WEBAPK_PACKAGE_PREFIX)
+                    && info.activityInfo.packageName.startsWith(
+                               WebApkConstants.WEBAPK_PACKAGE_PREFIX)
                     && isValidWebApk(context, info.activityInfo.packageName)) {
                 return info.activityInfo.packageName;
             }
@@ -83,7 +84,7 @@ public class WebApkValidator {
      * @param webappPackageName The package name to check
      * @return true iff the WebAPK is installed and passes security checks
      */
-    private static boolean isValidWebApk(Context context, String webappPackageName) {
+    public static boolean isValidWebApk(Context context, String webappPackageName) {
         if (sExpectedSignature == null) {
             Log.wtf(TAG, "WebApk validation failure - expected signature not set."
                     + "missing call to WebApkValidator.initWithBrowserHostSignature");