docs: revisions for google reference nav

Change-Id: I9befa502a3ce30ab6cca7d45ce1bb469930c14ed
diff --git a/tools/droiddoc/templates-sdk/assets/css/default.css b/tools/droiddoc/templates-sdk/assets/css/default.css
index 5867bec..d143a69 100644
--- a/tools/droiddoc/templates-sdk/assets/css/default.css
+++ b/tools/droiddoc/templates-sdk/assets/css/default.css
@@ -277,8 +277,6 @@
     position: relative;
     margin-bottom: 1px;
     padding: 0 30px 0 0; }
-  #nav .nav-section-header-ref {
-    padding: 10px 0; }
   #nav li.selected a, #nav li.selected > .nav-section-header > a {
     color: #09C;
   }
@@ -335,6 +333,25 @@
       background: transparent url(../images/styles/disclosure_up.png) no-repeat scroll 50% 50%;
       width: 34px;
       height: 34px; }
+  #nav li.expanded li ul.tree-list-children {
+    padding:0;  
+  }
+  #nav li.expanded li ul.tree-list-children .tree-list-children {
+    padding:0 0 0 10px;  
+  }
+  #nav li span.tree-list-subtitle {
+    display:inline-block;
+    padding:5px 0 0 10px;
+    color:#555;
+    text-transform:uppercase;
+    font-size:12px;
+  }
+  #nav li span.tree-list-subtitle:before {
+    content: '—';
+  }
+  #nav li span.tree-list-subtitle:after {
+    content: '—';
+  }
   #nav li ul {
     display:none;
     overflow: hidden;
@@ -359,11 +376,16 @@
     #nav li ul > li:last-child {
       padding-bottom:5px;
     }
+    #nav li ul.tree-list-children > li:last-child {
+      padding-bottom:0;
+    }
     #nav li.expanded ul > li {
       background:#efefef;
       background: rgba(0, 0, 0, 0.03); }
     #nav li.expanded ul > li li {
       background:inherit; }
+  #nav li ul.tree-list-children ul {
+    display:block; }
 
 .new,
 .new-child {