DevTools: Light blue highlight when hovering in Sources Navigator

third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css

Index: third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css b/third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css
index bec0a65d2ffadb181c8bd0996e8822adaf3a0f68..ed498a34ae934aa8c05ae794435fd069f43d86d2 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css
+++ b/third_party/WebKit/Source/devtools/front_end/sources/navigatorTree.css
@@ -69,6 +69,11 @@
     min-height: 20px;
 }
 
+.tree-outline li:hover:not(.selected) .selection {
+    display: block;
+    background-color: rgba(56, 121, 217, 0.1);
+}
+
 .navigator-folder-tree-item .icon {
     -webkit-mask-position: -64px -120px;
     background-color: #555;