Switch MD Settings to paper-dropdown-menu-light

chrome/browser/resources/settings/internet_page/network_proxy.html

 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-button/paper-button.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-checkbox/paper-checkbox.html">
+<link rel="import" href="chrome://resources/polymer/v1_0/paper-dropdown-menu/paper-dropdown-menu-light.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-input/paper-input-container.html">
 <link rel="import" href="chrome://resources/cr_elements/network/cr_onc_types.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_network_behavior.html">
 <link rel="import" href="chrome://resources/cr_elements/policy/cr_policy_network_indicator.html">
 <link rel="import" href="internet_shared_css.html">
 <link rel="import" href="network_property_list.html">
 <link rel="import" href="network_proxy_input.html">
 <link rel="import" href="network_proxy_exclusions.html">
 
@@ skipping 28 matching lines @@
         <cr-policy-network-indicator
             property="[[networkProperties.ProxySettings.Type]]">
         </cr-policy-network-indicator>
         <div>This proxy is enforced by your administrator.</div>
       </div>
     </div>
     
     <!-- Proxy type dropdown -->
     <div class="settings-box continuation">
       <div class="start">Connection type</div> 
-      <paper-dropdown-menu vertical-align="auto" no-label-float>
+      <paper-dropdown-menu-light vertical-align="auto" no-label-float>
         <paper-listbox class="dropdown-content" on-iron-activate="onTypeChange_"
             selected="[[proxy.Type]]" attr-for-selected="value">
           <template is="dom-repeat" items="[[proxyTypes_]]">
             <button class="dropdown-item" role="option" value="[[item]]">
               [[proxyTypeDesc_(item)]]
             </button>
           </template>
         </paper-listbox>
-      </paper-dropdown-menu>
+      </paper-dropdown-menu-light>
     </div>
 
     <!-- Autoconfiguration (PAC) -->
     <div class="settings-box continuation indented"
         hidden$="[[!matches_(proxy.Type, ProxySettingsType.PAC)]]">
       <div class="start">Autoconfiguration URL:</div>
       <paper-input  no-label-float class="flex" value="{{proxy.PAC}}"
           disabled="[[isNetworkPolicyEnforced(
                     networkProperties.ProxySettings.PAC)]]"
           on-blur="onProxyInputChange_">
@@ skipping 55 matching lines @@
           </paper-input-container>
           <paper-button on-tap="onAddProxyExclusionTap_">
             Add Exception
           </paper-button>
         </div>
       </div>
     </div>
   </template>
   <script src="network_proxy.js"></script>
 </dom-module>