Add a bitfield to track each of the activities on the page separately. Split the hysteresis & counters so we can track these separately.
Created attachment 243370 [details]
Attachment 243370 [details] did not pass style-queue:
ERROR: Source/WebCore/page/PageThrottler.cpp:34: Code inside a namespace should not be indented. [whitespace/indent] 
Total errors found: 1 in 3 files
If any of these errors are false positives, please file a bug against check-webkit-style.
Committed revision 177378.