[CrOS Settings] Move OS android app pages strings from settings strings

This CL continues the process of moving OS specific strings from
settings_strings.grdp to os_settings_strings.grdp, specifically
android app pages strings.

Bug: 967883
Change-Id: Iaaa6634a11cba885ae9105d6c9de71dd8ba12bde
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2065136
Commit-Queue: Nnamdi Theodore Johnson-kanu <tjohnsonkanu@google.com>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Cr-Commit-Position: refs/heads/master@{#743358}

chrome/app/os_settings_strings.grdp

@@ -719,6 +719,29 @@
   </message>
   <message name="IDS_SETTINGS_CROSTINI_PORT_FORWARDING_TABLE_TITLE" desc="Title for the list display of current preferences.">
     Ports
+  </message>  
+  
+  <!-- Android apps page (OS settings) -->
+  <message name="IDS_SETTINGS_ANDROID_APPS_LABEL" desc="The text associated with the primary section setting.">
+    Google Play Store
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_MANAGE_APPS" desc="Label for launching Android apps settings.">
+    Manage Android preferences
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_REMOVE" desc="Label for the control to open a dialog confirming removal of the Google Play Store.">
+    Remove Google Play Store
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_REMOVE_BUTTON" desc="Label for the button for the removal of the Google Play Store">
+    Remove
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_TITLE" desc="Title of the confirmation dialog for disabling android apps.">
+    Remove Android apps?
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_REMOVE" desc="Label for confirmation button in the disable android apps dialog.">
+    Remove Android apps
+  </message>
+  <message name="IDS_SETTINGS_ANDROID_APPS_MANAGE_APP_LINKS" desc="Label for accessing app preferrences on ARC side.">
+    Manage Play app links
   </message>
 </if>
 </grit-part>

chrome/app/settings_strings.grdp

@@ -194,25 +194,9 @@
     <message name="IDS_SETTINGS_ANDROID_SETTINGS_TITLE" desc="The title of Android settings section in case Play Store app is not available.">
       Android settings
     </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_LABEL" desc="The text associated with the primary section setting.">
-      Google Play Store
-    </message>
     <message name="IDS_SETTINGS_ANDROID_APPS_SUBTEXT" desc="Description for the section for enabling and managing Google Play Store (Android) apps.">
       Install apps and games from Google Play on your <ph name="DEVICE_TYPE">$1<ex>Chromebook</ex></ph>. &lt;a target="_blank" href="<ph name="URL">$2<ex>https://google.com/</ex></ph>"&gt;Learn more&lt;/a&gt;
     </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_MANAGE_APPS" desc="Label for launching Android apps settings.">
-      Manage Android preferences
-    </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_REMOVE" desc="Label for the control to open a dialog confirming removal of the Google Play Store.">
-      Remove Google Play Store
-    </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_REMOVE_BUTTON" desc="Label for the button for the removal of the Google Play Store">
-      Remove
-    </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_TITLE" desc="Title of the confirmation dialog for disabling android apps.">
-      Remove Android apps?
-    </message>
-
     <!-- TODO(jamescook): Use device type instead of "Chromebook", which may
          require changing ArcPlayTermsOfServiceConsent resource id handling. -->
     <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_MESSAGE" desc="Describes what will happen if the user opts out of android apps.">
@@ -222,12 +206,6 @@
       <ph name="LINE_BREAKS2">&lt;br&gt;&lt;br&gt;</ph>
       This doesn’t affect apps or content on other devices.
     </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_DISABLE_DIALOG_REMOVE" desc="Label for confirmation button in the disable android apps dialog.">
-      Remove Android apps
-    </message>
-    <message name="IDS_SETTINGS_ANDROID_APPS_MANAGE_APP_LINKS" desc="Label for accessing app preferrences on ARC side.">
-      Manage Play app links
-    </message>
 
     <!-- Apps Section Page -->
     <message name="IDS_SETTINGS_APPS_TITLE" desc="The title of Apps section.">