https://bugs.webkit.org/show_bug.cgi?id=89516

Reviewed by Geoffrey Garen.

Removing GCActivityCallbackCF.cpp because it doesn't mesh well with cross-platform
code on Darwin (e.g. Qt). We now use plain ol' vanilla ifdefs to handle platforms
without CF support. These if-defs will probably disappear in the future when we
use cross-platform timers in HeapTimer.

* JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
* JavaScriptCore.xcodeproj/project.pbxproj:
* runtime/GCActivityCallback.cpp:
(JSC):
(JSC::DefaultGCActivityCallback::DefaultGCActivityCallback):
(JSC::DefaultGCActivityCallback::doWork):
(JSC::DefaultGCActivityCallback::scheduleTimer):
(JSC::DefaultGCActivityCallback::cancelTimer):
(JSC::DefaultGCActivityCallback::didAllocate):
(JSC::DefaultGCActivityCallback::willCollect):
(JSC::DefaultGCActivityCallback::cancel):
* runtime/GCActivityCallbackCF.cpp: Removed.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@120778 268f45cc-cd09-0410-ab3c-d52691b4dbfc