Sync user's custom spellcheck dictionary

chrome/common/spellcheck_common.h

Index: chrome/common/spellcheck_common.h
diff --git a/chrome/common/spellcheck_common.h b/chrome/common/spellcheck_common.h
index d11dcfc6741d3a481b9058d4f2c540efa1cfdc9d..55f82720c9035f2f3ee1e4a05e34ed42c5587a14 100644
--- a/chrome/common/spellcheck_common.h
+++ b/chrome/common/spellcheck_common.h
@@ -18,6 +18,14 @@ static const int kMaxSuggestions = 5;
 
 static const int kMaxAutoCorrectWordSize = 8;
 
+// Maximum number of words in the custom spellcheck dictionary that can be
+// synced.
+static const size_t MAX_SYNCABLE_DICTIONARY_WORDS = 1300;
+
+// Maximum number of bytes in a word that can be added to the custom spellcheck
+// dictionary.
+static const size_t MAX_CUSTOM_DICTIONARY_WORD_BYTES = 99;
+
 typedef std::vector<std::string> WordList;
 
 FilePath GetVersionedFileName(const std::string& input_language,