Silence the overly verbose skipped files warning when extracting CRX files

third_party/zlib/google/zip.cc

Index: third_party/zlib/google/zip.cc
diff --git a/third_party/zlib/google/zip.cc b/third_party/zlib/google/zip.cc
index 31f0ace7af89f0fdb997ef8309e7d3fcc131ed8d..f0183d3f364034e03dd3abb822f3818604332cc5 100644
--- a/third_party/zlib/google/zip.cc
+++ b/third_party/zlib/google/zip.cc
@@ -95,12 +95,13 @@ namespace zip {
 
 bool Unzip(const base::FilePath& src_file, const base::FilePath& dest_dir) {
   return UnzipWithFilterCallback(src_file, dest_dir,
-                                 base::Bind(&ExcludeNoFilesFilter));
+                                 base::Bind(&ExcludeNoFilesFilter), true);
 }
 
 bool UnzipWithFilterCallback(const base::FilePath& src_file,
                              const base::FilePath& dest_dir,
-                             const FilterCallback& filter_cb) {
+                             const FilterCallback& filter_cb,
+                             bool log_skipped_files) {
   ZipReader reader;
   if (!reader.Open(src_file)) {
     DLOG(WARNING) << "Failed to open " << src_file.value();
@@ -122,7 +123,7 @@ bool UnzipWithFilterCallback(const base::FilePath& src_file,
                       << reader.current_entry_info()->file_path().value();
         return false;
       }
-    } else {
+    } else if (log_skipped_files) {
       DLOG(WARNING) << "Skipped file "
                     << reader.current_entry_info()->file_path().value();
     }