Remove the first launch from home screen requirement for notification deep linking.

chrome/android/java/src/org/chromium/chrome/browser/webapps/WebappDataStorage.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.webapps;
 
 import android.content.Context;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.Bitmap;
@@ skipping 24 matching lines @@
     static final String KEY_ICON = "icon";
     static final String KEY_NAME = "name";
     static final String KEY_SHORT_NAME = "short_name";
     static final String KEY_ORIENTATION = "orientation";
     static final String KEY_THEME_COLOR = "theme_color";
     static final String KEY_BACKGROUND_COLOR = "background_color";
     static final String KEY_SOURCE = "source";
     static final String KEY_ACTION = "action";
     static final String KEY_IS_ICON_GENERATED = "is_icon_generated";
     static final String KEY_VERSION = "version";
-    static final String KEY_LAUNCHED = "launched";
 
     // Unset/invalid constants for last used times and URLs. 0 is used as the null last
     // used time as WebappRegistry assumes that this is always a valid timestamp.
     static final long LAST_USED_UNSET = 0;
     static final long LAST_USED_INVALID = -1;
     static final String URL_INVALID = "";
     static final int VERSION_INVALID = 0;
 
     // We use a heuristic to determine whether a web app is still installed on the home screen, as
     // there is no way to do so directly. Any web app which has been opened in the last ten days
@@ skipping 101 matching lines @@
      * file. This does NOT delete the file itself but the file is left empty.
      * @param context  The context to read the SharedPreferences file.
      * @param webappId The ID of the web app being deleted.
      */
     static void deleteDataForWebapp(final Context context, final String webappId) {
         assert !ThreadUtils.runningOnUiThread();
         openSharedPreferences(context, webappId).edit().clear().apply();
     }
 
     /**
-     * Deletes the launched flag, URL and scope, and sets last used time to 0 in SharedPreferences.
+     * Deletes the URL and scope, and sets last used time to 0 in SharedPreferences.
      * This does not remove the stored splash screen image (if any) for the app.
      * @param context  The context to read the SharedPreferences file.
      * @param webappId The ID of the web app for which history is being cleared.
      */
     static void clearHistory(final Context context, final String webappId) {
         assert !ThreadUtils.runningOnUiThread();
         SharedPreferences.Editor editor = openSharedPreferences(context, webappId).edit();
 
         // The last used time is set to 0 to ensure that a valid value is always present.
         // If the web app is not launched prior to the next cleanup, then its remaining data will be
         // removed. Otherwise, the next launch from home screen will update the last used time.
         editor.putLong(KEY_LAST_USED, LAST_USED_UNSET);
-        editor.remove(KEY_LAUNCHED);
         editor.remove(KEY_URL);
         editor.remove(KEY_SCOPE);
         editor.apply();
     }
 
     /**
      * Sets the clock used to get the current time.
      */
     @VisibleForTesting
     public static void setClockForTests(Clock clock) {
@@ skipping 172 matching lines @@
      */
     long getLastUsedTime() {
         return mPreferences.getLong(KEY_LAST_USED, LAST_USED_INVALID);
     }
 
     /**
      * Returns true if this web app has been launched from home screen recently (within
      * WEBAPP_LAST_OPEN_MAX_TIME milliseconds).
      */
     public boolean wasLaunchedRecently() {
-        // Registering the web app sets the last used time, so we must also ensure that the web app
-        // has actually been launched. Otherwise, launches from home screen are the only occasion
-        // when last used time is updated.
-        return getLaunched()
-                && (sClock.currentTimeMillis() - getLastUsedTime() < WEBAPP_LAST_OPEN_MAX_TIME);
-    }
-
-    /**
-     * Returns true if this web app has been launched from home screen.
-     */
-    boolean getLaunched() {
-        return mPreferences.getBoolean(KEY_LAUNCHED, false);
-    }
-
-    /**
-     * Marks this web app as having been launched from home screen.
-     */
-    void setLaunched() {
-        mPreferences.edit().putBoolean(KEY_LAUNCHED, true).apply();
+        // Registering the web app sets the last used time, so that counts as a 'launch'.
+        return (sClock.currentTimeMillis() - getLastUsedTime() < WEBAPP_LAST_OPEN_MAX_TIME);
     }
 
     private Map<String, ?> getAllData() {
         return mPreferences.getAll();
     }
 
     /**
      * Called after data has been retrieved from storage.
      */
     public interface FetchCallback<T> {
@@ skipping 21 matching lines @@
      */
     public static class Clock {
         /**
          * Returns the current time in milliseconds.
          */
         public long currentTimeMillis() {
             return System.currentTimeMillis();
         }
     }
 }