[MD Extensions] Merge CSS into html files

chrome/browser/resources/md_extensions/item_list.html

Index: chrome/browser/resources/md_extensions/item_list.html
diff --git a/chrome/browser/resources/md_extensions/item_list.html b/chrome/browser/resources/md_extensions/item_list.html
index 3de5eaab82ee0fadba45e2bfa5b4f6014744a333..a457f4fe8b26ce649cccfbcc04fa1a8385c768a4 100644
--- a/chrome/browser/resources/md_extensions/item_list.html
+++ b/chrome/browser/resources/md_extensions/item_list.html
@@ -8,6 +8,18 @@
 
 <dom-module id="extensions-item-list">
   <template>
+    <style>
+      :host {
+        @apply(--layout-vertical);
+      }
+      iron-list {
+        @apply(--layout-flex);
+        margin-top: 18px;
+      }
+      .wrapper {
+        padding: 6px;
+      }
+    </style>
     <iron-list id="list" items="[[computeShownItems_(items.*, filter)]]"
         as="item" grid>
       <template>
@@ -19,6 +31,5 @@
       </template>
     </iron-list>
   </template>
-  <link rel="import" type="css" href="chrome://extensions/item_list.css">
   <script src="chrome://extensions/item_list.js"></script>
 </dom-module>