Handle webuis when using the network service.

third_party/zlib/google/compression_utils.h

 // Copyright 2014 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.
 
 #ifndef THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_
 #define THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_
 
 #include <string>
 
+#include "base/strings/string_piece.h"
+
 namespace compression {
 
 // Compresses the data in |input| using gzip, storing the result in |output|.
 // |input| and |output| are allowed to be the same string (in-place operation).
 bool GzipCompress(const std::string& input, std::string* output);
 
 // Uncompresses the data in |input| using gzip, storing the result in |output|.
 // |input| and |output| are allowed to be the same string (in-place operation).
 bool GzipUncompress(const std::string& input, std::string* output);
 
+// Like the above method, but uses base::StringPiece to avoid allocations if
+// needed. |output|'s size must be at least as large as the return value from
+// GetUncompressedSize.
+bool GzipUncompress(base::StringPiece input, base::StringPiece output);
+
+// Returns the uncompressed size from GZIP-compressed |compressed_data|.
+uint32_t GetUncompressedSize(base::StringPiece compressed_data);
+
 }  // namespace compression
 
 #endif  // THIRD_PARTY_ZLIB_GOOGLE_COMPRESSION_UTILS_H_