Network errors, hide suggestions less relevant on mobile platforms
+ Also fixes a bug where the proxy, firewall suggestion link opens an invalid URL.

BUG=591987,584615

Review URL: https://codereview.chromium.org/1786113002

Cr-Commit-Position: refs/heads/master@{#381813}
diff --git a/components/components_chromium_strings.grd b/components/components_chromium_strings.grd
index d19a9db..9ea2a3b 100644
--- a/components/components_chromium_strings.grd
+++ b/components/components_chromium_strings.grd
@@ -133,7 +133,7 @@
   <release seq="1" allow_pseudo="false">
     <messages fallback_to_english="true">
       <!-- Network Error Pages -->
-      <if expr="not is_android">
+      <if expr="not is_android and not is_ios">
         <message name="IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY" desc="When a page fails to load, sometimes we suggest disabling predicting network actions.  These are details below a header for non Android devices.">
           Go to
           the Chromium menu &gt;
@@ -144,19 +144,11 @@
           If this does not resolve the issue, we recommend selecting this option
           again for improved performance.
         </message>
-      </if>
-      <if expr="is_android">
-        <message name="IDS_ERRORPAGES_SUGGESTION_NETWORK_PREDICTION_BODY" desc="When a page fails to load, sometimes we suggest disabling predicting network actions.  These are details below a header for Android devices.  Note that on devices without mobile network (3G) capability, the setting is a checkbox, while on other devices, it is a list of three items.  The words _disable_ and _re-enabling_ can be used for both cases.">
-          Go to the Chromium menu &gt; Settings &gt; (Advanced) Privacy
-          and disable &quot;Prefetch page resources.&quot;
-          If this does not resolve the issue, we recommend re-enabling this option
-          again for improved performance.
+        <message name="IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER" desc="When a webpage fails to load, in some cases we suggest reconfiguring the firewall.  This is a header above some details.">
+          Allow Chromium to access the network in your firewall or antivirus
+          settings.
         </message>
       </if>
-      <message name="IDS_ERRORPAGES_SUGGESTION_FIREWALL_CONFIG_HEADER" desc="When a webpage fails to load, in some cases we suggest reconfiguring the firewall.  This is a header above some details.">
-        Allow Chromium to access the network in your firewall or antivirus
-        settings.
-      </message>
       <message name="IDS_ERRORPAGES_SUMMARY_BLOCKED_ENROLLMENT_CHECK_PENDING" desc="Summary in the error page when the user tries to browse before the forced enrollment check has finished.">
         Chromium OS hasn’t completed its initial setup.
       </message>
@@ -167,10 +159,6 @@
           and deselect any proxies that have been selected.
         </message>
       </if>
-      <if expr="is_android or is_ios">
-        <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM" desc="Instructions for disabling use of a proxy server (leave empty for Android and iOS).">
-        </message>
-      </if>
       <if expr="not chromeos and is_posix and not is_macosx and not is_android and not is_ios">
         <message name="IDS_ERRORPAGES_SUGGESTION_PROXY_DISABLE_PLATFORM" desc="Linux instructions for disabling use of a proxy server.">
           Go to