[vr] Add strings required for VR module on-demand install

Bug: 862689
Change-Id: If9713d4a079965047df35a8f5a4e93adf7e390bf
Reviewed-on: https://chromium-review.googlesource.com/1246299Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Commit-Queue: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#594398}

chrome/android/java/src/org/chromium/chrome/browser/vr/SilenceLintErrors.java

@@ -16,7 +16,8 @@ import org.chromium.chrome.R;
             R.string.vr_services_check_infobar_update_text,
             R.string.vr_services_check_infobar_install_button,
             R.string.vr_services_check_infobar_update_button, R.anim.stay_hidden,
-            R.drawable.vr_services, R.string.vr_module_title,
+            R.drawable.vr_services, R.string.vr_module_title, R.string.vr_module_install_start_text,
+            R.string.vr_module_install_success_text, R.string.vr_module_install_failure_text,
     };
 
     private SilenceLintErrors() {}

chrome/android/java/strings/android_chrome_strings.grd

@@ -3623,19 +3623,32 @@ However, you aren’t invisible. Going private doesn’t hide your browsing from
         <message name="IDS_VR_SERVICES_CHECK_INFOBAR_UPDATE_BUTTON" desc="Text to be displayed in the VR Services check infobar confirm button for updating.">
           Update
         </message>
+
+        <!-- VR module -->
         <message name="IDS_VR_MODULE_TITLE" desc="Title of the Virtual Reality (VR) dynamic feature module. Used, for instance, in the text of dialogs confirming to download the module.">
           VR
         </message>
+        <message name="IDS_VR_MODULE_INSTALL_START_TEXT" desc="Text shown on a toast when Chrome starts to download the VR dynamic feature module.">
+          Installing VR module...
+        </message>
+        <message name="IDS_VR_MODULE_INSTALL_SUCCESS_TEXT" desc="Text shown on a toast when Chrome successfully installed the VR dynamic feature module.">
+          Installed VR module
+        </message>
+        <message name="IDS_VR_MODULE_INSTALL_FAILURE_TEXT" desc="Text shown on a toast when Chrome failed to install the VR dynamic feature module.">
+          Failed to install VR module
+        </message>
       </if>
 
-      <!-- ARCore check infobar -->
       <if expr="enable_arcore">
+        <!-- ARCore check infobar -->
         <message name="IDS_AR_CORE_CHECK_INFOBAR_INSTALL_TEXT" desc="Text to be displayed in the ARCore check infobar. When a WebXR page is loaded, if ARCore is needed to display AR content and it is not installed, an infobar will be shown to the user prompting them to install ARCore.">
           To view augmented reality content, install ARCore
         </message>
         <message name="IDS_AR_CORE_CHECK_INFOBAR_UPDATE_TEXT" desc="Text to be displayed in the ARCore check infobar. When a WebXR page is loaded, if ARCore is needed to display AR content and the installed ARCore is not up to date to the version needed by the implementation, an infobar will be shown to the user prompting them to update ARCore.">
           To view augmented reality content, update ARCore
         </message>
+
+        <!-- AR module -->
         <message name="IDS_AR_MODULE_TITLE" desc="Title of the Augmented Reality (AR) dynamic feature module. Used, for instance, in the text of dialogs confirming to download the module.">
           AR
         </message>