Revert of [i18n] chromeos login i18n-content to $i18n{}

chrome/browser/resources/chromeos/login/oobe_screen_enable_debugging.html

 <div class="step faded hidden no-logo" id="debugging" role="group" hidden
      i18n-values="aria-label:enableDebuggingScreenAccessibleTitle">
   <div class="step-contents" aria-live="polite" aria-atomic="true">
     <div id="enable-debugging-icon"></div>
-    <div class="enable-debugging-title remove-protection-specific setup-specific
-                done-specific wait-specific">
-      $i18n{enableDebuggingScreenTitle}
+    <div i18n-content="enableDebuggingScreenTitle"
+        class="enable-debugging-title remove-protection-specific setup-specific
+               done-specific wait-specific">
     </div>
-    <div class="enable-debugging-title error-specific">
-      $i18n{enableDebuggingErrorTitle}
+    <div i18n-content="enableDebuggingErrorTitle"
+        class="enable-debugging-title error-specific">
     </div>
     <div id="enable-debugging-info"
         class="enable-debugging-text
                remove-protection-specific setup-specific state-specific
                error-specific done-specific">
       <div id="enable-debugging-remove-protection-details"
           class="remove-protection-specific">
-        <span>$i18n{enableDebuggingRemveRootfsMessage}</span>
-        <a id="enable-debugging-help-link" href="#">
-          $i18n{enableDebuggingLearnMore}
-        </a>
+        <span i18n-content="enableDebuggingRemveRootfsMessage"></span>
+        <a id="enable-debugging-help-link" href="#"
+            i18n-content="enableDebuggingLearnMore"></a>
       </div>
-      <div id="enable-debugging-setup-details" class="setup-specific">
-        $i18n{enableDebuggingSetupMessage}
+      <div id="enable-debugging-setup-details"
+          i18n-content="enableDebuggingSetupMessage"
+          class="setup-specific">
       </div>
       <div id="enable-debugging-passwords" class="setup-specific">
         <div class="enable-debugging-password-input">
           <input id="enable-debugging-password" type="password">
           <input id="enable-debugging-password2" type="password">
         </div>
-        <div id="enable-debugging-password-note">
-          $i18n{enableDebuggingPasswordLengthNote}
+        <div id="enable-debugging-password-note"
+            i18n-content="enableDebuggingPasswordLengthNote">
         </div>
       </div>
-      <div class="enable-debugging-completed-details done-specific">
-        $i18n{enableDebuggingDoneMessage}
+      <div class="enable-debugging-completed-details done-specific"
+          i18n-content="enableDebuggingDoneMessage">
       </div>
-      <div class="enable-debugging-error-details error-specific">
-        $i18n{enableDebuggingErrorMessage}
+      <div class="enable-debugging-error-details error-specific"
+          i18n-content="enableDebuggingErrorMessage">
       </div>
     </div>
     <div id="revert-promise" class="enable-debugging-text wait-specific">
-      <div id="enable-debugging-wait-msg">
-        $i18n{enableDebuggingWaitMessage}
+      <div id="enable-debugging-wait-msg"
+          i18n-content="enableDebuggingWaitMessage">
       </div>
     </div>
   </div>
   <div id="debugging-controls" class="step-controls"></div>
 </div>