This is used for two purposes; one is unnecessary, the other is a bug.
Created attachment 223532 [details] Fix
Attachment 223532 [details] did not pass style-queue: ERROR: Source/WebCore/page/Page.h:294: The parameter name "isVisible" adds no information, so it should be removed. [readability/parameter_name] [5] ERROR: Source/WebCore/page/Page.h:422: The parameter name "isVisible" adds no information, so it should be removed. [readability/parameter_name] [5] ERROR: Source/WebCore/ChangeLog:1: ChangeLog entry has no bug number [changelog/bugnumber] [5] ERROR: Source/WebCore/ChangeLog:8: You should remove the 'No new tests' and either add and list tests, or explain why no new tests were possible. [changelog/nonewtests] [5] Total errors found: 4 in 16 files If any of these errors are false positives, please file a bug against check-webkit-style.
Transmitting file data ................ Committed revision 163679.