Commment signed webapks working and verified.

chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
index 1eeca2e601e30278d57a14003d2f70001d9f4101..5dfd6ea96ca998187ee90912b3f3f12423889de6 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/ChromeWebApkHost.java
@@ -20,9 +20,7 @@ import org.chromium.chrome.browser.externalauth.UserRecoverableErrorHandler;
 import org.chromium.chrome.browser.preferences.ChromePreferenceManager;
 import org.chromium.webapk.lib.client.WebApkValidator;
 
-/**
- * Contains functionality needed for Chrome to host WebAPKs.
- */
+/** Contains functionality needed for Chrome to host WebAPKs. */
 public class ChromeWebApkHost {
     private static final String TAG = "ChromeWebApkHost";
 
@@ -32,7 +30,8 @@ public class ChromeWebApkHost {
     private static Boolean sEnabledForTesting;
 
     public static void init() {
-        WebApkValidator.initWithBrowserHostSignature(ChromeWebApkHostSignature.EXPECTED_SIGNATURE);
+        WebApkValidator.initWithBrowserHostSignature(
+                ChromeWebApkHostSignature.EXPECTED_SIGNATURE, ChromeWebApkHostSignature.PUBLIC_KEY);
     }
 
     public static void initForTesting(boolean enabled) {
@@ -78,11 +77,11 @@ public class ChromeWebApkHost {
     }
 
     /**
-     * Returns whether installing WebAPKs from Google Play is possible.
-     * If {@link sCanUseGooglePlayInstall} hasn't been set yet, it returns false immediately and
-     * calls the Google Play Install API to update {@link sCanUseGooglePlayInstall} asynchronously.
+     * Returns whether installing WebAPKs from Google Play is possible. If {@link
+     * sCanUseGooglePlayInstall} hasn't been set yet, it returns false immediately and calls the
+     * Google Play Install API to update {@link sCanUseGooglePlayInstall} asynchronously.
      */
-    private static boolean canUseGooglePlayToInstallWebApk() {
+    public static boolean canUseGooglePlayToInstallWebApk() {
         return getGooglePlayInstallState() == GooglePlayInstallState.SUPPORTED;
     }
 
@@ -122,6 +121,7 @@ public class ChromeWebApkHost {
     /**
      * Check the cached value to figure out if the feature is enabled. We have to use the cached
      * value because native library may not yet been loaded.
+     *
      * @return Whether the feature is enabled.
      */
     private static boolean isEnabledInPrefs() {
@@ -165,6 +165,8 @@ public class ChromeWebApkHost {
     }
 
     private static native boolean nativeCanUseGooglePlayToInstallWebApk();
+
     private static native boolean nativeCanLaunchRendererInWebApkProcess();
+
     private static native boolean nativeCanInstallFromUnknownSources();
 }