[Android] Explicitly request all needed runtime permissions.

chrome/android/java/src/org/chromium/chrome/browser/preferences/PrefServiceBridge.java

 // Copyright 2014 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;
 
 import android.content.Context;
 import android.content.SharedPreferences;
 import android.util.Log;
 
 import org.chromium.base.ContextUtils;
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.VisibleForTesting;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.chrome.browser.ContentSettingsType;
 import org.chromium.chrome.browser.preferences.website.ContentSetting;
 import org.chromium.chrome.browser.preferences.website.ContentSettingException;
 import org.chromium.chrome.browser.preferences.website.GeolocationInfo;
 import org.chromium.chrome.browser.preferences.website.WebsitePreferenceBridge;
 import org.chromium.chrome.browser.search_engines.TemplateUrlService;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 
 /**
  * PrefServiceBridge is a singleton which provides access to some native preferences. Ideally
  * preferences should be grouped with their relevant functionality but this is a grab-bag for other
  * preferences.
  */
 public final class PrefServiceBridge {
     // These values must match the native enum values in
     // SupervisedUserURLFilter::FilteringBehavior
     public static final int SUPERVISED_USER_FILTERING_ALLOW = 0;
     public static final int SUPERVISED_USER_FILTERING_WARN = 1;
     public static final int SUPERVISED_USER_FILTERING_BLOCK = 2;
 
     private static final String MIGRATION_PREF_KEY = "PrefMigrationVersion";
     private static final int MIGRATION_CURRENT_VERSION = 4;
 
-    private static final String HTTPS_SCHEME = "https";
+    /** The android permissions associated with requesting location. */
+    private static final String[] LOCATION_PERMISSIONS = {
+            android.Manifest.permission.ACCESS_FINE_LOCATION,
+            android.Manifest.permission.ACCESS_COARSE_LOCATION};
+    /** The android permissions associated with requesting access to the camera. */
+    private static final String[] CAMERA_PERMISSIONS = {android.Manifest.permission.CAMERA};
+    /** The android permissions associated with requesting access to the microphone. */
+    private static final String[] MICROPHONE_PERMISSIONS = {
+            android.Manifest.permission.RECORD_AUDIO};
+    /** Signifies there are no permissions associated. */
+    private static final String[] EMPTY_PERMISSIONS = {};
 
     // Object to notify when "clear browsing data" completes.
     private OnClearBrowsingDataListener mClearBrowsingDataListener;
     private static final String LOG_TAG = "PrefServiceBridge";
 
     // Constants related to the Contextual Search preference.
     private static final String CONTEXTUAL_SEARCH_DISABLED = "false";
     private static final String CONTEXTUAL_SEARCH_ENABLED = "true";
 
     // The key to store whether the Location Permission was automatically added for the search
@@ skipping 180 matching lines @@
             int contentSettingsType,
             String pattern,
             int contentSetting,
             String source) {
         ContentSettingException exception = new ContentSettingException(
                 contentSettingsType, pattern, ContentSetting.fromInt(contentSetting), source);
         list.add(exception);
     }
 
     /**
-     * Return the android permission string for a given {@link ContentSettingsType}.  If there
-     * is no corresponding permission, then null will be returned.
+     * Return the list of android permission strings for a given {@link ContentSettingsType}.  If
+     * there is no permissions associated with the content setting, then an empty array is returned.
      *
      * @param contentSettingType The content setting to get the android permission for.
-     * @return The android permission for the given content setting.
+     * @return The android permissions for the given content setting.
      */
     @CalledByNative
-    public static String getAndroidPermissionForContentSetting(int contentSettingType) {
+    public static String[] getAndroidPermissionsForContentSetting(int contentSettingType) {
         if (contentSettingType == ContentSettingsType.CONTENT_SETTINGS_TYPE_GEOLOCATION) {
-            return android.Manifest.permission.ACCESS_FINE_LOCATION;
+            return Arrays.copyOf(LOCATION_PERMISSIONS, LOCATION_PERMISSIONS.length);
         }
         if (contentSettingType == ContentSettingsType.CONTENT_SETTINGS_TYPE_MEDIASTREAM_MIC) {
-            return android.Manifest.permission.RECORD_AUDIO;
+            return Arrays.copyOf(MICROPHONE_PERMISSIONS, MICROPHONE_PERMISSIONS.length);
         }
         if (contentSettingType == ContentSettingsType.CONTENT_SETTINGS_TYPE_MEDIASTREAM_CAMERA) {
-            return android.Manifest.permission.CAMERA;
+            return Arrays.copyOf(CAMERA_PERMISSIONS, CAMERA_PERMISSIONS.length);
         }
-        return null;
+        return EMPTY_PERMISSIONS;
     }
 
     /**
      * @return Whether autoplay is enabled.
      */
     public boolean isAutoplayEnabled() {
         return nativeGetAutoplayEnabled();
     }
 
     public boolean isAcceptCookiesEnabled() {
@@ skipping 895 matching lines @@
     private native String nativeGetSupervisedUserSecondCustodianProfileImageURL();
     private native boolean nativeIsMetricsReportingEnabled();
     private native void nativeSetMetricsReportingEnabled(boolean enabled);
     private native boolean nativeIsMetricsReportingManaged();
     private native void nativeSetClickedUpdateMenuItem(boolean clicked);
     private native boolean nativeGetClickedUpdateMenuItem();
     private native void nativeSetLatestVersionWhenClickedUpdateMenuItem(String version);
     private native String nativeGetLatestVersionWhenClickedUpdateMenuItem();
     private native void nativeSetSupervisedUserId(String supervisedUserId);
 }