Fix safe-browsing sub parsing for download whitelist.

chrome/browser/safe_browsing/protocol_parser.h

Index: chrome/browser/safe_browsing/protocol_parser.h
diff --git a/chrome/browser/safe_browsing/protocol_parser.h b/chrome/browser/safe_browsing/protocol_parser.h
index d074f2ad2f1a601146bd3b18ce9038f8ac5b3d7d..3e82e0ef9ff87368a5b66a8e160aea964fd80bde 100644
--- a/chrome/browser/safe_browsing/protocol_parser.h
+++ b/chrome/browser/safe_browsing/protocol_parser.h
@@ -115,11 +115,11 @@ class SafeBrowsingProtocolParser {
                      std::deque<SBChunkHost>* hosts);
 
   // Helper functions used by ParseAddChunk and ParseSubChunk.
-  static void ReadHostAndPrefixCount(const char** data,
+  static bool ReadHostAndPrefixCount(const char** data,
                                      int* remaining,
                                      SBPrefix* host,
                                      int* count);
-  static int ReadChunkId(const char** data, int* remaining);
+  static bool ReadChunkId(const char** data, int* remaining, int* chunk_id);
   static bool ReadPrefixes(
       const char** data, int* remaining, SBEntry* entry, int count);