DevTools: Fix toolbar layout glitches on memory panel

third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css

Index: third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css
diff --git a/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css b/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css
index b9601914e8ba26d2353375b7b6e002a24941000b..f7a1eafdcca323e948b7c09f892e643380484a01 100644
--- a/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css
+++ b/third_party/WebKit/Source/devtools/front_end/profiler/profilesPanel.css
@@ -67,10 +67,16 @@
 .profiles-toolbar {
     background-color: #f3f3f3;
     border-bottom: 1px solid #ccc;
+    flex-shrink: 0;
 }
 
-.profiles-sidebar-tree-box {
+.profiles-tree-sidebar {
     flex: auto;
+    overflow: hidden;
+}
+
+.profiles-sidebar-tree-box {
+    overflow-y: auto;
 }
 
 .profile-view {