[MD settings] update settings title bar

chrome/browser/resources/settings/icons.html

Index: chrome/browser/resources/settings/icons.html
diff --git a/chrome/browser/resources/settings/icons.html b/chrome/browser/resources/settings/icons.html
index 517afccd90853d9941bf48ef5eae15a77f4ff876..d4b7ee25f1bc8e89efe963670b76714060ecb1de 100644
--- a/chrome/browser/resources/settings/icons.html
+++ b/chrome/browser/resources/settings/icons.html
@@ -12,6 +12,11 @@
           </g>
         </g>
       </g>
+
+      <g id="search" stroke="none" stroke-width="1" fill="#ffffff">

[michaelpg, 2016/05/02 05:52:14]

It looks like you just took this from iron-icons.html and doubled all the
values. Why? Vectors scale, right? (Same question for the cancel icon, added
later.)

I'm asking because I'm consolidating icons via polyicon and I don't see the need
for this duplicate.

+        <path d="M31 28h-1.59l-.55-.55C30.82 25.18 32 22.23 32 19c0-7.18-5.82-13-13-13S6 11.82 6 19s5.82 13 13 13c3.23 0 6.18-1.18 8.45-3.13l.55.55V31l10 9.98L40.98 38 31 28zm-12 0c-4.97 0-9-4.03-9-9s4.03-9 9-9 9 4.03 9 9-4.03 9-9 9z"></path>
+        <path d="M0 0h48v48H0z" fill="none"></path>
+      </g>
     </defs>
   </svg>
 </iron-icon-set>