Files.app: Fixed the bug that the search box is not hidden when window is shrink.

This is regression bug of CSS.
This CL rise the priority of CSS section that hides the search box.

BUG=243281
TEST=manually

Review URL: https://chromiumcodereview.appspot.com/15868002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202018 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/file_manager/css/file_manager.css

@@ -803,10 +803,6 @@ body[new-ui] .dialog-header button:not(:hover):not(focus):not(:active) {
   width: 100%;
 }
 
-#search-box[hidden] {
-  display: none;  /* Required, since overriden by #search-box. */
-}
-
 body[new-ui] #search-box {
   -webkit-margin-end: 0;
   -webkit-padding-after: 0;
@@ -828,6 +824,10 @@ body[new-ui] #search-box {
   width: 58px;
 }
 
+body #search-box[hidden] {
+  display: none;  /* Required, since overriden by #search-box. */
+}
+
 html[dir='rtl'] #search-box {
   background-position: right 4px top 5.5px;
 }