DevTools: Nuke timeline frame overview

Source/devtools/front_end/timeline/timelinePanel.css

Index: Source/devtools/front_end/timeline/timelinePanel.css
diff --git a/Source/devtools/front_end/timeline/timelinePanel.css b/Source/devtools/front_end/timeline/timelinePanel.css
index b3eb40056247493232054bc2c87149f8d77db059..b305982c56e50b391d96a420fc798cedbbfc466a 100644
--- a/Source/devtools/front_end/timeline/timelinePanel.css
+++ b/Source/devtools/front_end/timeline/timelinePanel.css
@@ -59,21 +59,10 @@
     background-color: rgb(255, 255, 255);
 }
 
-.timeline-overview-frames-mode #timeline-overview-grid,
-.timeline-overview-frames-mode .overview-grid-cursor-area,
-.timeline-overview-frames-mode .overview-grid-cursor-position {
-    display: none;
-}
-
 #timeline-overview-grid .resources-dividers-label-bar {
     pointer-events: auto;
 }
 
-.timeline-overview-frames-mode .overview-grid-window,
-.timeline-overview-frames-mode .overview-grid-dividers-background {
-    height: 100%;
-}
-
 #timeline-container {
     border-right: 0 none transparent;
     overflow-y: scroll;
@@ -319,10 +308,6 @@
     flex-basis: 6px;
 }
 
-#timeline-overview-frames {
-    flex-basis: 100px;
-}
-
 #timeline-overview-pane {
     flex: auto;
     position: relative;
@@ -342,12 +327,6 @@
     height: 100%;
 }
 
-#timeline-overview-frames canvas {
-    z-index: 200;
-    opacity: 0.8;
-    background-color: rgb(255, 255, 255);
-}
-
 #timeline-graphs {
     position: absolute;
     left: 0;