Change Profiler snapshot selector scale to log

Author: Brian Vaughn

packages/react-devtools-shared/src/devtools/views/Profiler/SnapshotCommitListItem.js

@@ -41,7 +41,10 @@ function SnapshotCommitListItem({data: itemData, index, style}: Props) {
 
   // Guard against commits with duration 0
   const percentage =
-    Math.min(1, Math.max(0, commitDuration / maxDuration)) || 0;
+    Math.min(
+      1,
+      Math.max(0, Math.log(commitDuration) / Math.log(maxDuration)),
+    ) || 0;
   const isSelected = selectedCommitIndex === index;
 
   // Leave a 1px gap between snapshots
@@ -77,7 +80,7 @@ function SnapshotCommitListItem({data: itemData, index, style}: Props) {
         style={{
           height: `${Math.round(percentage * 100)}%`,
           backgroundColor:
-            percentage > 0 ? getGradientColor(percentage) : undefined,
+            commitDuration > 0 ? getGradientColor(percentage) : undefined,
         }}
       />
     </div>