Merge V8 5.3.332.45.  DO NOT MERGE

Test: Manual

FPIIM-449

Change-Id: Id3254828b068abdea3cb10442e0172a8c9a98e03
(cherry picked from commit 13e2dadd00298019ed862f2b2fc5068bba730bcf)
diff --git a/build/args/bots/official.desktop/blimp-engine.gn b/build/args/bots/official.desktop/blimp-engine.gn
index 2554c37..0f9cc6d 100644
--- a/build/args/bots/official.desktop/blimp-engine.gn
+++ b/build/args/bots/official.desktop/blimp-engine.gn
@@ -3,5 +3,8 @@
 # Use release build to improve engine performance, especially WebP encoding.
 is_debug = false
 
+# Designate this as an official build to pick up breakpad symbols.
+is_official_build = true
+
 # Turn on DCHECK to find bugs.
 dcheck_always_on = true