Generating hash values from the result of GetNativeFontInfoDesc() sometimes leads to duplicate hash values.
Created attachment 19133 [details] Make sure we generate unique hash ids Fix that uses the font object's pointer as the source for the hash value.
Created attachment 19149 [details] Simplified version that doesn't do an unnecessary hash calculation
Comment on attachment 19149 [details] Simplified version that doesn't do an unnecessary hash calculation r=me
Landed in r30334. Thanks!