DevTools: Convert to Shadow DOM and Custom Elements v1

Bug: 685385
Change-Id: I027e84d8003b7799492211d5fcf8348cd91fd799
Reviewed-on: https://chromium-review.googlesource.com/c/1422962
Reviewed-by: Dmitry Gozman <[email protected]>
Commit-Queue: Joel Einbinder <[email protected]>
Cr-Original-Commit-Position: refs/heads/master@{#625513}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: b00e6ea1c9b4db5d743c7c204b1f63abf89e0398
diff --git a/front_end/network/networkLogView.css b/front_end/network/networkLogView.css
index 2a1d831..eaeb07a 100644
--- a/front_end/network/networkLogView.css
+++ b/front_end/network/networkLogView.css
@@ -44,7 +44,7 @@
     overflow: hidden;
 }
 
-.network-summary-bar label[is=dt-icon-label] {
+.network-summary-bar span[is=dt-icon-label] {
     margin-right: 6px;
 }