[iOS] Adds Face ID usage key

Adds iOS usage key for face ID to the plist file.

Bug: 889430
Cq-Include-Trybots: luci.chromium.try:ios-simulator-cronet;luci.chromium.try:ios-simulator-full-configs
Change-Id: I75aaeb919f6d68c105e8a7711c5d0ca1a70aec3d
Reviewed-on: https://chromium-review.googlesource.com/1245371
Commit-Queue: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Eric Noyau <noyau@chromium.org>
Cr-Commit-Position: refs/heads/master@{#595432}

ios/chrome/app/resources/Info.plist

@@ -189,5 +189,7 @@
 	<string>IDS_IOS_PHOTO_LIBRARY_ADD_USAGE_DESCRIPTION</string>
 	<key>NSBluetoothPeripheralUsageDescription</key>
 	<string>IDS_IOS_BLUETOOTH_USAGE_DESCRIPTION</string>
+	<key>NSFaceIDUsageDescription</key>
+	<string>IDS_IOS_FACE_ID_USAGE_DESCRIPTION</string>
 </dict>
 </plist>

ios/chrome/app/resources/chrome_localize_strings_config.plist

@@ -64,7 +64,12 @@
 					<key>output</key>
 					<string>NSPhotoLibraryAddUsageDescription</string>
 				</dict>
-
+				<dict>
+					<key>input</key>
+					<string>IDS_IOS_FACE_ID_USAGE_DESCRIPTION</string>
+					<key>output</key>
+					<string>NSFaceIDUsageDescription</string>
+				</dict>
 				<string>IDS_IOS_APPLICATION_SHORTCUT_NEWTAB_TITLE</string>
 				<string>IDS_IOS_APPLICATION_SHORTCUT_NEWINCOGNITOTAB_TITLE</string>
 				<string>IDS_IOS_APPLICATION_SHORTCUT_VOICE_SEARCH_TITLE</string>

ios/chrome/app/strings/ios_chromium_strings.grd

@@ -174,6 +174,9 @@ locale.  The strings in this file are specific to iOS.
       <message name="IDS_IOS_DISCONNECT_DIALOG_TITLE" desc="The title of the disconnect dialog [Length: 30em].">
         Sign out of Chromium?
       </message>
+      <message name="IDS_IOS_FACE_ID_USAGE_DESCRIPTION" desc="Specifies the reason for using the device's Face ID capabilities.">
+        Chromium uses Face ID to ensure authorized access to your passwords.
+      </message>
       <message name="IDS_IOS_FIRSTRUN_AGREE_TO_TERMS" desc="Label containing a link to the Terms of Service and Privacy Notice, displayed in the first run flow. [Length: 117em] [iOS only]">
         By using this application, you agree to Chromium’s <ph name="BEGIN_LINK_TOS">BEGIN_LINK_TOS</ph>Terms of Service<ph name="END_LINK_TOS">END_LINK_TOS</ph> and <ph name="BEGIN_LINK_PRIVACY">BEGIN_LINK_PRIVACY</ph>Privacy Notice<ph name="END_LINK_PRIVACY">END_LINK_PRIVACY</ph>.
       </message>

ios/chrome/app/strings/ios_google_chrome_strings.grd

@@ -174,6 +174,9 @@ locale.  The strings in this file are specific to iOS.
       <message name="IDS_IOS_DISCONNECT_DIALOG_TITLE" desc="The title of the disconnect dialog [Length: 30em].">
         Sign out of Chrome?
       </message>
+      <message name="IDS_IOS_FACE_ID_USAGE_DESCRIPTION" desc="Specifies the reason for using the device's Face ID capabilities.">
+        Chrome uses Face ID to ensure authorized access to your passwords.
+      </message>
       <message name="IDS_IOS_FIRSTRUN_AGREE_TO_TERMS" desc="Label containing a link to the Terms of Service and Privacy Notice, displayed in the first run flow. [Length: 117em] [iOS only]">
       By using this application, you agree to Chrome’s <ph name="BEGIN_LINK_TOS">BEGIN_LINK_TOS</ph>Terms of Service<ph name="END_LINK_TOS">END_LINK_TOS</ph> and <ph name="BEGIN_LINK_PRIVACY">BEGIN_LINK_PRIVACY</ph>Privacy Notice<ph name="END_LINK_PRIVACY">END_LINK_PRIVACY</ph>.
       </message>

ios/chrome/browser/ui/settings/reauthentication_module.mm

@@ -41,7 +41,7 @@ constexpr char kPasscodeArticleURL[] = "https://support.apple.com/HT204060";
 
 - (BOOL)canAttemptReauth {
   LAContext* context = _createLAContext();
-  // The authentication method is Touch ID or passcode.
+  // The authentication method is Touch ID, Face ID or passcode.
   return
       [context canEvaluatePolicy:LAPolicyDeviceOwnerAuthentication error:nil];
 }