1 files changed, 14 insertions, 3 deletions
diff --git a/ui/src/tracks/chrome_slices/common.ts b/ui/src/tracks/chrome_slices/common.ts
index 41eb3c203..0d476bcf7 100644
--- a/ui/src/tracks/chrome_slices/common.ts
+++ b/ui/src/tracks/chrome_slices/common.ts
@@ -18,15 +18,26 @@ export const SLICE_TRACK_KIND = 'ChromeSliceTrack';
 
 export interface Config {
   maxDepth: number;
+  namespace: string;
   trackId: number;
 }
 
 export interface Data extends TrackData {
-  // Slices are stored in a columnar fashion. All fields have the same length.
+  // Slices are stored in a columnar fashion.
   strings: string[];
   sliceIds: Float64Array;
   starts: Float64Array;
   ends: Float64Array;
   depths: Uint16Array;
-  titles: Uint16Array;      // Index in |strings|.
-}
+  titles: Uint16Array;  // Index into strings.
+
+  // Start offset into into summary columns or -1 if not summarised.
+  summarizedOffset: Int16Array;
+  // Number of summary data points for this slice.
+  summarizedSize: Uint16Array;
+
+  // These arrays are length S where S is number of summarized slices * the
+  // items in each slice.
+  summaryNameId: Uint16Array;
+  summaryPercent: Float64Array;
+}
+\ No newline at end of file