[MD Settings][People] Visual updates to the sync setup page.

chrome/app/settings_strings.grdp

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Settings-specific strings (included from generated_resources.grd). -->
 <grit-part>
   <!-- About Page -->
   <if expr="chromeos">
     <message name="IDS_SETTINGS_ABOUT_PAGE_DETAILED_BUILD_INFO" desc="Label describing the section that shows detailed information about the current Chrome build.">
       Detailed build information
     </message>
     <message name="IDS_SETTINGS_ABOUT_PAGE_ARC_VERSION" desc="Label for ARC version">
       ARC Version
@@ skipping 2083 matching lines @@
   <message name="IDS_SETTINGS_MANAGE_SYNCED_DATA_DESCRIPTION" desc="Subtitle for the link to manage Chrome Sync data via Google Dashboard.">
     Opens Google Dashboard
   </message>
   <message name="IDS_SETTINGS_ENCRYPTION_OPTIONS" desc="Title for the section which includes options for encrypting sync settings.">
     Encryption options
   </message>
   <message name="IDS_SETTINGS_ENCRYPT_WITH_GOOGLE_CREDENTIALS_LABEL" desc="Label for the radio button which, when selected, causes synced settings to be encrypted with the Google login for the current browser profile.">
     Encrypt synced passwords with your Google credentials
   </message>
   <message name="IDS_SETTINGS_ENCRYPT_WITH_SYNC_PASSPHRASE_LABEL" desc="Label for the radio button which, when selected, causes synced settings to be encrypted with a user-provided password.">
-    Encrypt all synced data with your own sync passphrase.
+    Encrypt synced data with your own <ph name="BEGIN_LINK">&lt;a href="$1" target=&quot;_blank&quot;&gt;<ex>&lt;a href="$1" target=&quot;_blank&quot;&gt;</ex></ph>sync passphrase<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>.
   </message>
-  <message name="IDS_SETTINGS_ENCRYPT_WITH_SYNC_PASSPHRASE_LEARN_MORE_LINK" desc="Text for the link which explains how synced settings are encrypted with a user-provided password">
-    Learn more
+  <message name="IDS_SETTINGS_PASSPHRASE_EXPLANATION_TEXT" desc="Message shown when explicit passphrase is selected.">
+    Only someone with your passphrase can read your encrypted data. The passphrase is not sent to or stored by Google. If you forget your passphrase or want to change this setting, you'll need to <ph name="BEGIN_LINK">&lt;a href="$1" target=&quot;_blank&quot;&gt;<ex>&lt;a href="$1" target=&quot;_blank&quot;&gt;</ex></ph>reset sync<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>.
   </message>
-  <message name="IDS_SETTINGS_PASSPHRASE_EXPLANATION_TEXT" desc="Message when explicit passphrase is selected.">
-    Only someone with your passphrase can read your encrypted data. The passphrase is not sent to or stored by Google. If you forget your passphrase, you will need to reset sync.
+  <message name="IDS_SETTINGS_PASSPHRASE_RESET_HINT" desc="Informs user how to change their encryption setting.">
+    To change this setting, <ph name="BEGIN_LINK">&lt;a href="$1" target=&quot;_blank&quot;&gt;<ex>&lt;a href="$1" target=&quot;_blank&quot;&gt;</ex></ph>reset sync<ph name="END_LINK">&lt;/a&gt;<ex>&lt;/a&gt;</ex></ph>.
   </message>
   <message name="IDS_SETTINGS_EMPTY_PASSPHRASE_ERROR" desc="Error message when the passphrase is empty.">
     Empty passphrase is not allowed.
   </message>
   <message name="IDS_SETTINGS_MISMATCHED_PASSPHRASE_ERROR" desc="Error message when the passphrase and confirmation don't match.">
     You must enter the same passphrase twice.
   </message>
   <message name="IDS_SETTINGS_INCORRECT_PASSPHRASE_ERROR" desc="Message when the passphrase is incorrect.">
     The passphrase you entered is incorrect.
   </message>
@@ skipping 362 matching lines @@
       System
     </message>
     <message name="IDS_SETTINGS_SYSTEM_HARDWARE_ACCELERATION_LABEL" desc="Label for the checkbox that forces Chrome to render via hardware acceleration (GPU) when available.">
       Use hardware acceleration when available
     </message>
     <message name="IDS_SETTINGS_SYSTEM_PROXY_SETTINGS_BUTTON" desc="Text for the button that changes a user's network proxy settings.">
       Change proxy settings
     </message>
   </if>
 </grit-part>