DevTools: Make item info follow the mouse on the flame chart.

third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css

Index: third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css
diff --git a/third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css b/third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css
index 30d588fe4c97768175374b59e536b333a3d513d9..e36349d1a1245d4c01160999df558cda225c9ffd 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css
+++ b/third_party/WebKit/Source/devtools/front_end/ui_lazy/flameChart.css
@@ -59,15 +59,26 @@
     bottom: 0;
 }
 
-.flame-chart-entry-info {
+.flame-chart-entry-info:not(:empty) {
+    z-index: 100;
+    margin: 6px 10px;
     position: absolute;
-    bottom: 6px;
-    left: 12px;
-    background-color: rgba(255, 255, 255, 0.7);
+    background-color: white;
     pointer-events: none;
+    padding: 2px;
+    border: 1px solid hsl(0, 0%, 90%);
+    box-shadow: hsla(0, 0%, 0%, 0.2) 1px 1px 8px;
+}
+
+.flame-chart-entry-info table tr td {
+    padding: 0;
+    white-space: nowrap;
+}
+
+.flame-chart-entry-info table tr td:not(:empty) {
+    padding: 0 4px;
 }
 
 .flame-chart-entry-info table tr td:first-child {
     font-weight: bold;
-    padding-right: 8px;
 }