Clean up some mobile STTS string resources.

Move iOS strings from ui/strings/ui_strings.grd to
ios/chrome/app/strings/ios_strings.grd.

Change-Id: I1e8c443bd3dc3631e77d06cbc4cfc9eb286aeb7a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1839373Reviewed-by: sebsg <sebsg@chromium.org>
Reviewed-by: Rohit Rao <rohitrao@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#703812}

ios/chrome/app/strings/ios_strings.grd

@@ -1513,6 +1513,12 @@ Handoff must also be enabled in the General section of Settings, and your device
       <message name="IDS_IOS_SHARE_MENU_SEND_TAB_TO_SELF_ACTION" desc="Text label to the Send Tab To Self action in the extension menu that sends the current tab to the user's other devices. [iOS only]">
         Send To Your Devices
       </message>
+      <message name="IDS_SEND_TAB_TO_SELF_INFOBAR_MESSAGE" desc="The message text for the infobar when a user receives a shared tab from another device.">
+        Tab received.
+      </message>
+      <message name="IDS_SEND_TAB_TO_SELF_INFOBAR_MESSAGE_URL" desc="Clickable text displayed as part of a URL in the inforbar displayed when a user receives a shared tab from another device.">
+        Open
+      </message>
       <message name="IDS_IOS_SEND_TAB_TO_SELF_SNACKBAR_MESSAGE" desc="Message briefly displayed at the bottom of the screen to the user to inform that the tab is being sent to the target device. [Length: 35em]" meaning="The is being sent to the target device. [Length: 35em]">
         Sending to <ph name="DEVICE_NAME">$1<ex>IPhone</ex></ph>...
       </message>

ios/chrome/browser/send_tab_to_self/ios_send_tab_to_self_infobar_delegate.cc

@@ -11,10 +11,10 @@
 #include "components/send_tab_to_self/send_tab_to_self_entry.h"
 #include "components/send_tab_to_self/send_tab_to_self_metrics.h"
 #include "components/send_tab_to_self/send_tab_to_self_model.h"
+#include "ios/chrome/grit/ios_strings.h"
 #include "ios/chrome/grit/ios_theme_resources.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/window_open_disposition.h"
-#include "ui/strings/grit/ui_strings.h"
 
 namespace send_tab_to_self {
 

ui/strings/ui_strings.grd

@@ -952,14 +952,6 @@ need to be translated for each locale.-->
         {UNREAD_NOTIFICATIONS, plural, =1 {1 Unread Notification} other {# Unread Notifications}}
       </message>
 
-      <!-- Send Tab To Self -->
-      <message name="IDS_SEND_TAB_TO_SELF_INFOBAR_MESSAGE" desc="The message text for the infobar when a user receives a shared tab from another device.">
-        Tab received.
-      </message>
-      <message name="IDS_SEND_TAB_TO_SELF_INFOBAR_MESSAGE_URL" desc="Clickable text displayed as part of a URL in the inforbar displayed when a user receives a shared tab from another device.">
-        Open
-      </message>
-
       <!-- Browser sharing messages -->
       <message name="IDS_BROWSER_SHARING_CLICK_TO_CALL_DIALOG_TITLE_LABEL" desc="The label to be shown as the title of the dialog when user click on a phone number, which means which device from the dialog to use for telephony service.">
         Make a call from