DevTools: [TrackingHeapProfiler] Provide a chart with living heap date at recording time.

Source/devtools/front_end/profilesPanel.css

Index: Source/devtools/front_end/profilesPanel.css
diff --git a/Source/devtools/front_end/profilesPanel.css b/Source/devtools/front_end/profilesPanel.css
index 0ae6ff10cfb4a96c0b04ce83789b74291e6b6180..a5a996dac628abeba5743ab4c4e685b04f757b53 100644
--- a/Source/devtools/front_end/profilesPanel.css
+++ b/Source/devtools/front_end/profilesPanel.css
@@ -209,3 +209,12 @@ body.inactive .profile-launcher-view-content button.running:not(.status-bar-item
 .profile-canvas-decoration button {
     margin: 0 0 0 10px !important;
 }
+
+.overview-container {
+    overflow: hidden;
+    position: absolute;
+    top: 0px;
+    width: 100%;
+    height: 80px;
+    bottom:  0px;
+}