IDS_IOS_ENTERPRISE_MANAGED_SETTING_DESC_WITH_COMPANY_NAME for FlexOrgs

Adjust IDS_IOS_ENTERPRISE_MANAGED_SETTING_DESC_WITH_COMPANY_NAME to
support FlexOrgs by renaming the domain placeholder to manager and
adjusting the description to make it easier for the translators to
understand the usage of the text.

In the future the placeholder passed to this string for the enterprise
name needs to be replaced by the user's managed_by PolicyData field as
explained in the ticket, however currently nil is always passed as the
enterprise name (see
https://osscs.corp.google.com/search?q=%22initWithEnterpriseName:%22).

Bug: b:172679683
Test: None
Change-Id: Ib636acb7c4ea7da347a00caec2ddfd136a123dcf
Skip-Translation-Screenshots-Check: True
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2566969Reviewed-by: Brian Malcolm <bmalcolm@chromium.org>
Commit-Queue: Jana Grill <janagrill@chromium.org>
Cr-Commit-Position: refs/heads/master@{#833416}

ios/chrome/app/strings/ios_strings.grd

@@ -1679,8 +1679,8 @@ While in incognito, sites can't use cookies to see your browsing activity across
       <message name="IDS_IOS_PASSWORDS" desc="Title for the view in Settings for managing saved passwords. [Length: 15em] [iOS only]">
         Passwords
       </message>
-      <message name="IDS_IOS_ENTERPRISE_MANAGED_SETTING_DESC_WITH_COMPANY_NAME" desc="Text displayed to inform the user that the browser is managed by Enterprise policies with company name. [iOS only]">
-        Managed by <ph name="COMPANY">$1<ex>Google</ex></ph>. <ph name="BEGIN_LINK">BEGIN_LINK</ph>Learn more<ph name="END_LINK">END_LINK</ph>
+      <message name="IDS_IOS_ENTERPRISE_MANAGED_SETTING_DESC_WITH_COMPANY_NAME" desc="Text displayed to inform the user that the browser is managed by Enterprise policies. MANAGER can be a domain or an email address. [iOS only]">
+        Managed by <ph name="MANAGER">$1<ex>Google</ex></ph>. <ph name="BEGIN_LINK">BEGIN_LINK</ph>Learn more<ph name="END_LINK">END_LINK</ph>
       </message>
       <message name="IDS_IOS_ENTERPRISE_MANAGED_SETTING_DESC_WITHOUT_COMPANY_NAME" desc="Text displayed to inform the user that the browser is managed by Enterprise policies without company name. [iOS only]">
         Managed by your organization. <ph name="BEGIN_LINK">BEGIN_LINK</ph>Learn more<ph name="END_LINK">END_LINK</ph>