[DevTools] Dedicated frontend for debugging Node.

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

Index: third_party/WebKit/Source/devtools/front_end/sources/sourcesPanel.css
diff --git a/third_party/WebKit/Source/devtools/front_end/sources/sourcesPanel.css b/third_party/WebKit/Source/devtools/front_end/sources/sourcesPanel.css
index a459d1bec20cf4b3a47d93ec2b37f9f2625957aa..d71133b8494d4f3edb471ae9a304a997803b786c 100644
--- a/third_party/WebKit/Source/devtools/front_end/sources/sourcesPanel.css
+++ b/third_party/WebKit/Source/devtools/front_end/sources/sourcesPanel.css
@@ -102,6 +102,20 @@
     cursor: auto;
 }
 
+.available-node-targets {
+    height: 22px;
+    display: flex;
+    align-items: center;
+    justify-content: flex-start;
+    padding-left: 20px;
+    border-top: 1px solid #eee;
+    font-style: italic;
+}
+
+.available-node-targets > span {
+    margin-left: 5px;
+}
+
 .watch-expression-delete-button {
     width: 10px;
     height: 10px;