Add a section to Site Settings listing USB devices.

chrome/android/java/src/org/chromium/chrome/browser/preferences/website/SiteSettingsCategory.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.preferences.website;
 
 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
@@ skipping 27 matching lines @@
     public static final String CATEGORY_CAMERA = "camera";
     public static final String CATEGORY_COOKIES = "cookies";
     public static final String CATEGORY_DEVICE_LOCATION = "device_location";
     public static final String CATEGORY_FULLSCREEN = "fullscreen";
     public static final String CATEGORY_JAVASCRIPT = "javascript";
     public static final String CATEGORY_MICROPHONE = "microphone";
     public static final String CATEGORY_NOTIFICATIONS = "notifications";
     public static final String CATEGORY_POPUPS = "popups";
     public static final String CATEGORY_PROTECTED_MEDIA = "protected_content";
     public static final String CATEGORY_USE_STORAGE = "use_storage";
+    public static final String CATEGORY_USB = "usb";
 
     // The id of this category.
     private String mCategory;
 
     // The id of a permission in Android M that governs this category. Can be blank if Android has
     // no equivalent permission for the category.
     private String mAndroidPermission;
 
     // The content settings type that this category represents. Can be -1 if the category has no
     // content settings type (such as All Sites).
@@ skipping 66 matching lines @@
             return new SiteSettingsCategory(CATEGORY_POPUPS, "",
                     ContentSettingsType.CONTENT_SETTINGS_TYPE_POPUPS);
         }
         if (CATEGORY_PROTECTED_MEDIA.equals(category)) {
             return new SiteSettingsCategory(CATEGORY_PROTECTED_MEDIA, "",
                     ContentSettingsType.CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER);
         }
         if (CATEGORY_USE_STORAGE.equals(category)) {
             return new SiteSettingsCategory(CATEGORY_USE_STORAGE, "", -1);
         }
+        if (CATEGORY_USB.equals(category)) {
+            return new SiteSettingsCategory(
+                    CATEGORY_USB, "", ContentSettingsType.CONTENT_SETTINGS_TYPE_USB_CHOOSER_DATA);
+        }
 
         return null;
     }
 
     /**
      * Construct a SiteSettingsCategory from a content settings type. Note that not all categories
      * are associated with a content settings type (e.g. All Sites). Such categories must be created
      * fromString().
      */
     public static SiteSettingsCategory fromContentSettingsType(int contentSettingsType) {
@@ skipping 24 matching lines @@
         if (contentSettingsType == ContentSettingsType.CONTENT_SETTINGS_TYPE_NOTIFICATIONS) {
             return fromString(CATEGORY_NOTIFICATIONS);
         }
         if (contentSettingsType == ContentSettingsType.CONTENT_SETTINGS_TYPE_POPUPS) {
             return fromString(CATEGORY_POPUPS);
         }
         if (contentSettingsType
                 == ContentSettingsType.CONTENT_SETTINGS_TYPE_PROTECTED_MEDIA_IDENTIFIER) {
             return fromString(CATEGORY_PROTECTED_MEDIA);
         }
+        if (contentSettingsType == ContentSettingsType.CONTENT_SETTINGS_TYPE_USB_CHOOSER_DATA) {
+            return fromString(CATEGORY_USB);
+        }
 
         return null;
     }
 
     /**
      * Returns the content settings type for this category, or -1 if no such type exists.
      */
     public int toContentSettingsType() {
         return mContentSettingsType;
     }
@@ skipping 86 matching lines @@
     }
 
     /**
      * Returns whether this category is the Storage category.
      */
     public boolean showStorageSites() {
         return CATEGORY_USE_STORAGE.equals(mCategory);
     }
 
     /**
+     * Returns whether this category is the USB category.
+     */
+    public boolean showUsbDevices() {
+        return mContentSettingsType == ContentSettingsType.CONTENT_SETTINGS_TYPE_USB_CHOOSER_DATA;
+    }
+
+    /**
      * Returns whether the current category is managed either by enterprise policy or by the
      * custodian of a supervised account.
      */
     public boolean isManaged() {
         PrefServiceBridge prefs = PrefServiceBridge.getInstance();
         if (showBackgroundSyncSites()) return prefs.isBackgroundSyncManaged();
         if (showCameraSites()) return !prefs.isCameraUserModifiable();
         if (showCookiesSites()) return prefs.isAcceptCookiesManaged();
         if (showFullscreenSites()) return prefs.isFullscreenManaged();
         if (showGeolocationSites()) {
@@ skipping 173 matching lines @@
      * Returns whether a per-app permission is enabled.
      * @param permission The string of the permission to check.
      */
     private boolean permissionOnInAndroid(String permission, Context context) {
         if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) return true;
 
         return PackageManager.PERMISSION_GRANTED == context.getPackageManager().checkPermission(
                 permission, context.getPackageName());
     }
 }