Remove legacy StartsWithASCII function.

third_party/zlib/google/zip_reader.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_reader.h"
 
 #include "base/bind.h"
 #include "base/files/file.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
@@ skipping 129 matching lines @@
   // We also consider that the file name is unsafe, if it's invalid UTF-8.
   base::string16 file_name_utf16;
   if (!base::UTF8ToUTF16(file_name_in_zip.data(), file_name_in_zip.size(),
                          &file_name_utf16)) {
     is_unsafe_ = true;
   }
 
   // We also consider that the file name is unsafe, if it's absolute.
   // On Windows, IsAbsolute() returns false for paths starting with "/".
   if (file_path_.IsAbsolute() ||
-      base::StartsWithASCII(file_name_in_zip, "/", false))
+      base::StartsWith(file_name_in_zip, "/",
+                       base::CompareCase::INSENSITIVE_ASCII))
     is_unsafe_ = true;
 
   // Construct the last modified time. The timezone info is not present in
   // zip files, so we construct the time as local time.
   base::Time::Exploded exploded_time = {};  // Zero-clear.
   exploded_time.year = raw_file_info.tmu_date.tm_year;
   // The month in zip file is 0-based, whereas ours is 1-based.
   exploded_time.month = raw_file_info.tmu_date.tm_mon + 1;
   exploded_time.day_of_month = raw_file_info.tmu_date.tm_mday;
   exploded_time.hour = raw_file_info.tmu_date.tm_hour;
@@ skipping 372 matching lines @@
 }
 
 bool FileWriterDelegate::WriteBytes(const char* data, int num_bytes) {
   int bytes_written = file_->WriteAtCurrentPos(data, num_bytes);
   if (bytes_written > 0)
     file_length_ += bytes_written;
   return bytes_written == num_bytes;
 }
 
 }  // namespace zip