Network log top border shouldn't stick to status bar.

BUG=
NOTRY=true

Review URL: https://codereview.chromium.org/188473003

git-svn-id: svn://svn.chromium.org/blink/trunk@168621 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/networkPanel.css

@@ -51,8 +51,8 @@
     display: block;
 }
 
-.network.panel .panel-status-bar {
-    border-bottom: 1px solid rgb(179, 179, 179);
+#network-container {
+    border-top: 1px solid rgb(179, 179, 179);
 }
 
 .network.panel .sidebar {