Roll v8/ ef9b5c3a6..49d1fa9a2 (362 commits)

https://chromium.googlesource.com/v8/v8.git/+log/ef9b5c3a6d0c..49d1fa9a2ba1

Version 10.1.42

Created with:
  roll-dep v8

Change-Id: I323663bcfa279712e24662d5c6b029f74192fe68
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/91114
Reviewed-by: Nigi <nigi@chromium.org>
Commit-Queue: Nigi <nigi@chromium.org>
diff --git a/DEPS b/DEPS
index 9b7ea30..dae7dbe 100644
--- a/DEPS
+++ b/DEPS
@@ -139,7 +139,7 @@
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling v8
   # and whatever else without interference from each other.
-  'v8_revision': 'ef9b5c3a6d0ca76cb2a034abbe40da7caa33c84a',
+  'v8_revision': '49d1fa9a2ba1f55c58324d4dae08f96e01e557af',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling zlib
   # and whatever else without interference from each other.