Adds a new checkbox for backup and restore in opt-in flow.

chrome/app/chromeos_strings.grdp

Index: chrome/app/chromeos_strings.grdp
diff --git a/chrome/app/chromeos_strings.grdp b/chrome/app/chromeos_strings.grdp
index 76f5e7f8264d3535bbdcdf19cd6f67d4fc6e643e..5ff2f56022690ac054f4f71fafef042d6d1e0080 100644
--- a/chrome/app/chromeos_strings.grdp
+++ b/chrome/app/chromeos_strings.grdp
@@ -6687,16 +6687,19 @@ All users must sign out to continue.
     Terms of Service
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_METRICS_MANAGED_ENABLED" desc="Message in the opt-in dialog for Android apps in case metrics are managed on the device and on.">
-    This device will automatically send diagnostic and usage data to Google. This <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>setting<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph> is enforced by your administrator. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+    This device will automatically send diagnostic and usage data to Google. This <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>setting<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph> is enforced by your administrator. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link-metrics"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_METRICS_MANAGED_DISABLED" desc="Message in the opt-in dialog for Android apps in case metrics are enabled on the device and off.">
-    Your administrator may choose to send diagnostic and usage data for this device to Google. You may view this <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>setting<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph> here. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+    Your administrator may choose to send diagnostic and usage data for this device to Google. You may view this <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>setting<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph> here. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link-metrics"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_METRICS_ENABLED" desc="Message in the opt-in dialog for Android apps in case metrics are already enabled on the device. User has no way to deactivate them using opt-in dialog.">
-    This device will automatically send diagnostic and usage data to Google. You can change this at any time in your device <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>settings<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+    This device will automatically send diagnostic and usage data to Google. You can change this at any time in your device <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>settings<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link-metrics"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
   </message>
   <message name="IDS_ARC_OPT_IN_DIALOG_METRICS_DISABLED" desc="Message in the opt-in dialog for Android apps in case metrics are disabled on the device. User has an option to active them using opt-in dialog">
-    Automatically send diagnostic and usage data to Google. You can change this at any time in your device <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>settings<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+    Automatically send diagnostic and usage data to Google. You can change this at any time in your device <ph name="BEGIN_LINK1">&lt;a href="#" id="settings-link"&gt;</ph>settings<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>. <ph name="BEGIN_LINK2">&lt;a href="#" id="learn-more-link-metrics"&gt;</ph>Learn More<ph name="END_LINK2">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
+  </message>
+  <message name="IDS_ARC_OPT_IN_DIALOG_BACKUP_RESTORE" desc="Message in the opt-in dialog for Android apps in case backup and restore is disabled on the device. User has an option to activate them using opt-in dialog">

[elijahtaylor1, 2016/06/30 01:59:06]

the bit about "in case backup and restore is disabled on device" is a copy-paste
mistake I think from above.  It could simply be something like: Message in the
opt-in dialog for users to enable Backup and Restore for Android apps"

[malaykeshav, 2016/06/30 02:46:19]

Done

+    Automatically back up and restore Play app data to Google Drive. You can change this in Android Settings at any time. <ph name="BEGIN_LINK1">&lt;a href="#" id="learn-more-link-backup-restore"&gt;</ph>Learn More<ph name="END_LINK1">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>
   </message>
   <message name="IDS_ARC_OPT_OUT_TAB_TITLE" desc="Tab title when viewing opt-out setting dialog for android apps.">
     Settings - Remove Android apps