Implement privacy disclosure for an unbound webapk.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
index c8dae5ee46e1273bc391671faffb611ca713418c..d54dbf0ddfa043cdce632558730632fa75f2203e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.java
@@ -66,6 +66,9 @@ public class WebappDataStorage {
     // The shell Apk version requested in the last update.
     static final String KEY_LAST_REQUESTED_SHELL_APK_VERSION = "last_requested_shell_apk_version";
 
+    // Whether the user has dismissed the disclosure UI.
+    static final String KEY_DISMISSED_DISCLOSURE = "dismissed_dislosure";
+
     // Number of milliseconds between checks for whether the WebAPK's Web Manifest has changed.
     public static final long UPDATE_INTERVAL = TimeUnit.DAYS.toMillis(3L);
 
@@ -323,6 +326,7 @@ public class WebappDataStorage {
         editor.remove(KEY_DID_LAST_UPDATE_REQUEST_SUCCEED);
         editor.remove(KEY_UPDATE_REQUESTED);
         editor.remove(KEY_RELAX_UPDATES);
+        editor.remove(KEY_DISMISSED_DISCLOSURE);
         editor.apply();
     }
 
@@ -420,6 +424,14 @@ public class WebappDataStorage {
         return mPreferences.getBoolean(KEY_DID_LAST_UPDATE_REQUEST_SUCCEED, false);
     }
 
+    void setDismissedDisclosure() {
+        mPreferences.edit().putBoolean(KEY_DISMISSED_DISCLOSURE, true).apply();
+    }
+
+    boolean hasDismissedDisclosure() {
+        return mPreferences.getBoolean(KEY_DISMISSED_DISCLOSURE, false);
+    }
+
     /**
      * Increases the number of times that update has been requested for the WebAPK by 1.
      */