Add more padding to start of <select> in webui pages.

BUG=103688
TEST=manual

Review URL: http://codereview.chromium.org/8549001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@109937 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/shared/css/select.css

@@ -10,7 +10,7 @@ select {
   -webkit-border-radius: 2px;
   -webkit-box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
   -webkit-padding-end: 20px;
-  -webkit-padding-start: 2px;
+  -webkit-padding-start: 8px;
   -webkit-user-select: none;
   background-image: url("../images/select.png"),
                     -webkit-linear-gradient(#fafafa, #f4f4f4 40%, #e5e5e5);