Silence the overly verbose skipped files warning when extracting CRX files

third_party/zlib/google/zip.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "third_party/zlib/google/zip.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 77 matching lines @@
 bool ExcludeHiddenFilesFilter(const base::FilePath& file_path) {
   return file_path.BaseName().value()[0] != '.';
 }
 
 }  // namespace
 
 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();
     return false;
   }
   while (reader.HasMore()) {
     if (!reader.OpenCurrentEntryInZip()) {
       DLOG(WARNING) << "Failed to open the current file in zip";
       return false;
     }
     if (reader.current_entry_info()->is_unsafe()) {
       DLOG(WARNING) << "Found an unsafe file in zip "
                     << reader.current_entry_info()->file_path().value();
       return false;
     }
     if (filter_cb.Run(reader.current_entry_info()->file_path())) {
       if (!reader.ExtractCurrentEntryIntoDirectory(dest_dir)) {
         DLOG(WARNING) << "Failed to extract "
                       << 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();
     }
 
     if (!reader.AdvanceToNextEntry()) {
       DLOG(WARNING) << "Failed to advance to the next file";
       return false;
     }
   }
   return true;
@@ skipping 73 matching lines @@
   if (ZIP_OK != zipClose(zip_file, NULL)) {
     DLOG(ERROR) << "Error closing zip file for fd " << dest_fd;
     success = false;
   }
 
   return success;
 }
 #endif  // defined(OS_POSIX)
 
 }  // namespace zip