diff --git a/libcef_dll/sandbox/sandbox_win.cc b/libcef_dll/sandbox/sandbox_win.cc
index c13297074..a81ce9dbe 100644
--- a/libcef_dll/sandbox/sandbox_win.cc
+++ b/libcef_dll/sandbox/sandbox_win.cc
@@ -39,26 +39,3 @@ void* cef_sandbox_info_create() {
 void cef_sandbox_info_destroy(void* sandbox_info) {
   delete static_cast<sandbox::SandboxInterfaceInfo*>(sandbox_info);
 }
-
-#if BUILDFLAG(IS_CEF_SANDBOX_BUILD)
-// Avoid bringing in absl dependencies.
-namespace absl {
-
-// From third_party/abseil-cpp/absl/types/bad_optional_access.cc
-namespace optional_internal {
-void throw_bad_optional_access() {
-  LOG(FATAL) << "Bad optional access";
-  abort();
-}
-}  // namespace optional_internal
-
-// From third_party/abseil-cpp/absl/types/bad_variant_access.cc
-namespace variant_internal {
-void ThrowBadVariantAccess() {
-  LOG(FATAL) << "Bad variant access";
-  abort();
-}
-}  // namespace variant_internal
-
-}  // namespace absl
-#endif  // BUILDFLAG(IS_CEF_SANDBOX_BUILD)
diff --git a/tools/file_util.py b/tools/file_util.py
index 54d79ee5f..810aed9fd 100644
--- a/tools/file_util.py
+++ b/tools/file_util.py
@@ -6,6 +6,7 @@ from __future__ import absolute_import
 from glob import iglob
 from io import open
 import os
+import fnmatch
 import shutil
 import sys
 import time
@@ -155,9 +156,28 @@ def make_dir(name, quiet=True):
 
 
 def get_files(search_glob):
-  """ Returns all files matching the search glob. """
+  """ Returns all files matching |search_glob|. """
+  recursive_glob = '**' + os.path.sep
+  if recursive_glob in search_glob:
+    if sys.version_info >= (3, 5):
+      result = iglob(search_glob, recursive=True)
+    else:
+      # Polyfill for recursive glob pattern matching added in Python 3.5.
+      result = get_files_recursive(*search_glob.split(recursive_glob))
+  else:
+    result = iglob(search_glob)
+
   # Sort the result for consistency across platforms.
-  return sorted(iglob(search_glob))
+  return sorted(result)
+
+
+def get_files_recursive(directory, pattern):
+  """ Returns all files in |directory| matching |pattern| recursively. """
+  for root, dirs, files in os.walk(directory):
+    for basename in files:
+      if fnmatch.fnmatch(basename, pattern):
+        filename = os.path.join(root, basename)
+        yield filename
 
 
 def read_version_file(file, args):
diff --git a/tools/make_distrib.py b/tools/make_distrib.py
index 9bf65c6f0..bb330116f 100644
--- a/tools/make_distrib.py
+++ b/tools/make_distrib.py
@@ -886,6 +886,12 @@ if platform == 'windows':
       'obj\\base\\win\\pe_image.lib',
       cef_sandbox_lib,
       'obj\\sandbox\\win\\sandbox.lib',
+      'obj\\third_party\\abseil-cpp\\absl\\base\\**\\*.obj',
+      'obj\\third_party\\abseil-cpp\\absl\\debugging\\**\\*.obj',
+      'obj\\third_party\\abseil-cpp\\absl\\numeric\\**\\*.obj',
+      'obj\\third_party\\abseil-cpp\\absl\\synchronization\\**\\*.obj',
+      'obj\\third_party\\abseil-cpp\\absl\\time\\**\\*.obj',
+      'obj\\third_party\\abseil-cpp\\absl\\types\\**\\*.obj',
   ]
 
   # Generate the cef_sandbox.lib merged library. A separate *_sandbox build