[CrOS settings] Move network error strings to chromeos_strings.grdp

This CL moves chromeOS strings Network error strings  from
settings_strings.grdp to chromeos_strings.grdp. These strings are not
in os_settings_localized_strings_provider.cc, but are used in
chromeOS network page (network_element_localized_strings_provider.cc).
It continues the process of moving all chromeOS specific strings.

Bug: 967883
Change-Id: I743208524ffdbc9e23f2502a34d97b5c0e24dbd3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2142146Reviewed-by: dpapad <dpapad@chromium.org>
Reviewed-by: Kyle Horimoto <khorimoto@chromium.org>
Commit-Queue: Nnamdi Theodore Johnson-kanu <tjohnsonkanu@google.com>
Cr-Commit-Position: refs/heads/master@{#757637}

chrome/app/chromeos_strings.grdp

@@ -1295,6 +1295,21 @@
   <message name="IDS_CHROMEOS_NETWORK_ERROR_CERTIFICATES_NOT_LOADED" desc="Network error details in notifications: Certificates not loaded">
     Certificates not loaded
   </message>
+  <message name="IDS_NETWORK_ERROR_CANNOT_CHANGE_SHARED_CONFIG" desc="Network error message shown when attempting to change a shared network configuration if the operation is not allowed">
+    Changing shared network configurations is not allowed
+  </message>
+  <message name="IDS_NETWORK_ERROR_NO_USER_CERT" desc="In the network connect dialog, when creating a VPN or enterprise Wi-Fi connection, error message to display when no user certificates are installed.">
+    Please install a user certificate.
+  </message>
+  <message name="IDS_NETWORK_ERROR_POLICY_CONTROLLED" desc="Network error message shown when attempting to remove or illegally modify a policy controlled network">
+    Network is policy controlled
+  </message>
+  <message name="IDS_NETWORK_ERROR_PASSPHRASE_REQUIRED" desc="Network error message shown when a passphrase is required to connect to a network but was not supplied.">
+    Passphrase required
+  </message>
+  <message name="IDS_NETWORK_ERROR_UNKNOWN" desc="Network error message shown for an unknown or unexpected network configuration error">
+    Error configuring network
+  </message>
 
   <!-- Sync/sign-in error messages -->
   <message name="IDS_SIGNIN_ERROR_SECONDARY_ACCOUNT_BUBBLE_VIEW_TITLE" desc="Title in the sign-in error bubble view/notification for Chrome OS Secondary Accounts.">

chrome/app/settings_strings.grdp

@@ -1114,25 +1114,6 @@
     </message>
   </if>
 
-  <!-- Network error strings. -->
-  <if expr="chromeos">
-    <message name="IDS_NETWORK_ERROR_CANNOT_CHANGE_SHARED_CONFIG" desc="Network error message shown when attempting to change a shared network configuration if the operation is not allowed">
-      Changing shared network configurations is not allowed
-    </message>
-    <message name="IDS_NETWORK_ERROR_NO_USER_CERT" desc="In the network connect dialog, when creating a VPN or enterprise Wi-Fi connection, error message to display when no user certificates are installed.">
-      Please install a user certificate.
-    </message>
-    <message name="IDS_NETWORK_ERROR_POLICY_CONTROLLED" desc="Network error message shown when attempting to remove or illegally modify a policy controlled network">
-      Network is policy controlled
-    </message>
-    <message name="IDS_NETWORK_ERROR_PASSPHRASE_REQUIRED" desc="Network error message shown when a passphrase is required to connect to a network but was not supplied.">
-      Passphrase required
-    </message>
-    <message name="IDS_NETWORK_ERROR_UNKNOWN" desc="Network error message shown for an unknown or unexpected network configuration error">
-      Error configuring network
-    </message>
-  </if>
-
   <!-- On Startup Page -->
   <message name="IDS_SETTINGS_ON_STARTUP" desc="Name of the on startup page.">
     On startup