WebUI: Vulcanize MD Settings at compile time.

chrome/browser/resources/settings/about_page/about_page.html

Index: chrome/browser/resources/settings/about_page/about_page.html
diff --git a/chrome/browser/resources/settings/about_page/about_page.html b/chrome/browser/resources/settings/about_page/about_page.html
index 3e4f02952002eceba0941e2c5fd70f26d49ca3e6..15aaba430297d134ea4bc35bbb063727b6c22c79 100644
--- a/chrome/browser/resources/settings/about_page/about_page.html
+++ b/chrome/browser/resources/settings/about_page/about_page.html
@@ -91,12 +91,13 @@
               <span class="product-title">$i18n{aboutProductTitle}</span>
             </div>
             <div class="settings-box two-line">
+              <!-- TODO(dpapad): Investigate why vulcanize does not handle well
+                a new line after "getIconSrc_(", causes incorrect src URL -->
               <iron-icon
                   hidden="[[!showUpdateStatus_]]"
                   icon$="[[getIcon_(
                       obsoleteSystemInfo_, currentUpdateStatusEvent_)]]"
-                  src="[[getIconSrc_(
-                      obsoleteSystemInfo_, currentUpdateStatusEvent_)]]">
+                  src="[[getIconSrc_(obsoleteSystemInfo_, currentUpdateStatusEvent_)]]">
               </iron-icon>
               <div class="start">
                 <div id="updateStatusMessage" hidden="[[!showUpdateStatus_]]"