Revert accidental commit that messed up the incremental speed heuristics.

Review URL: http://codereview.chromium.org/8467014

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@9899 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/incremental-marking.cc

@@ -831,7 +831,7 @@ void IncrementalMarking::Step(intptr_t allocated_bytes) {
     speed_up = true;
   }
 
-  if (speed_up && 0) {
+  if (speed_up) {
     allocation_marking_factor_ += kAllocationMarkingFactorSpeedup;
     allocation_marking_factor_ =
         static_cast<int>(allocation_marking_factor_ * 1.3);