[sandbox] Enable the sandbox by default in gm.py

Since enabling the sandbox is now required for example for mkgrokdump,
add it to the default gn args. Also treat non-sandbox builds as
"non-shipping" in mkgrokdump.cc

Bug: v8:13281
Change-Id: I08042aa53057e25c556e166c059373e2fdb9d2c1
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3899317
Commit-Queue: Samuel Groß <saelo@chromium.org>
Reviewed-by: Jakob Kummerow <jkummerow@chromium.org>
Cr-Commit-Position: refs/heads/main@{#83231}

test/mkgrokdump/mkgrokdump.cc

@@ -31,7 +31,7 @@ static const char* kHeader =
     "# yapf: disable\n\n";
 
 // Debug builds emit debug code, affecting code object sizes.
-#ifndef DEBUG
+#if !defined(DEBUG) && defined(V8_ENABLE_SANDBOX)
 static const char* kBuild = "shipping";
 #else
 static const char* kBuild = "non-shipping";

tools/dev/gm.py

@@ -169,6 +169,7 @@ v8_enable_disassembler = true
 v8_enable_object_print = true
 v8_enable_verify_heap = true
 dcheck_always_on = false
+v8_enable_sandbox = true
 """.replace("{GOMA}", USE_GOMA)
 
 DEBUG_ARGS_TEMPLATE = """\
@@ -181,6 +182,7 @@ v8_enable_backtrace = true
 v8_enable_fast_mksnapshot = true
 v8_enable_slow_dchecks = true
 v8_optimized_debug = false
+v8_enable_sandbox = true
 """.replace("{GOMA}", USE_GOMA)
 
 OPTDEBUG_ARGS_TEMPLATE = """\
@@ -193,6 +195,7 @@ v8_enable_backtrace = true
 v8_enable_fast_mksnapshot = true
 v8_enable_verify_heap = true
 v8_optimized_debug = true
+v8_enable_sandbox = true
 """.replace("{GOMA}", USE_GOMA)
 
 ARGS_TEMPLATES = {