Update DevTools Chromium DEPS.

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Bug: none
Change-Id: I6fe2e71309810e20979b3dbacb93db205a63b3ed
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/3742940
Bot-Commit: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
Commit-Queue: Devtools Autoroller <devtools-ci-autoroll-builder@chops-service-accounts.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 56ee3e7..35d270b 100644
--- a/DEPS
+++ b/DEPS
@@ -38,11 +38,11 @@
 
   # Chromium build number for unit tests. It should be regularly updated to
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Linux_x64/LAST_CHANGE
-  'chromium_linux': '1020413',
+  'chromium_linux': '1020490',
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Win_x64/LAST_CHANGE
-  'chromium_win': '1020412',
+  'chromium_win': '1020486',
   # the content of https://commondatastorage.googleapis.com/chromium-browser-snapshots/Mac/LAST_CHANGE
-  'chromium_mac': '1020412',
+  'chromium_mac': '1020488',
 }
 
 # Only these hosts are allowed for dependencies in this DEPS file.