Incrementing VERSION to 78.0.3904.87

TBR=benmason@chromium.org

Change-Id: I63665f9019fda488ead4ae554ca36c5cb7843211
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1891231
Reviewed-by: Chrome Release Bot (LUCI) <chrome-official-brancher@chops-service-accounts.iam.gserviceaccount.com>
Cr-Commit-Position: refs/branch-heads/3904@{#840}
Cr-Branched-From: 675968a8c657a3bd9c1c2c20c5d2935577bbc5e6-refs/heads/master@{#693954}
diff --git a/chrome/VERSION b/chrome/VERSION
index af3a04502..4327edd5 100644
--- a/chrome/VERSION
+++ b/chrome/VERSION
@@ -1,4 +1,4 @@
 MAJOR=78
 MINOR=0
 BUILD=3904
-PATCH=86
+PATCH=87